How is ice removed from aircraft that have ice control systems installed

Answers

Answer 1

The de-icing boot consists of a rubber membrane which is inflated and deflated periodically to raise the ice slightly, the air moving over the aircraft wing then removes the raised ice.

Deicing boots are a form of ice protection system that are mounted on aircraft surfaces to allow for mechanical deicing while in flight. As these regions are more likely to accumulate ice and any contamination might significantly impair the performance of the aircraft, such boots are typically mounted on the leading edges of wings and control surfaces (such as the horizontal and vertical stabilisers). Any ice that has built up is cracked by this size expansion and is blasted away into the breeze. The boots are then deflated to restore the wing or surface to its ideal shape. Boots need to be well maintained. Air leakage from holes in the boot could make them less effective.

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Related Questions

Examine this statement:
SELECT 3 * 2 + 2 / 4 FROM DUAL; What is the result?

Answers

Answer:

it is 2

Explanation:

this is sql command that return one line (from dual ) with taht math solved

The result of this SQL statement would be 6.5

Here is the breakdown of the calculation:

3 * 2 = 6

2 / 4 = 0.5

6 + 0.5 = 6.5

Define the term SQL.

SQL stands for Structured Query Language. It is a programming language used to manage and manipulate relational databases. SQL is used to communicate with a database, allowing users to create, read, update, and delete data from a database. SQL is widely used by software developers, database administrators, data analysts, and other professionals who work with data.

SQL consists of a set of commands that are used to interact with a database. These commands include SELECT, INSERT, UPDATE, DELETE, and others. SQL commands are used to retrieve data from a database, add new data, modify existing data, and delete data. SQL is used to create and manage database schemas, which define the structure of a database and the relationships between different tables.

The SQL statement SELECT 3 * 2 + 2 / 4 FROM DUAL; will produce a result of 6.5.

The statement is performing a simple arithmetic calculation, which involves multiplication, division, and addition. Here is the calculation part:

3 * 2 is calculated first, which gives us 6.

2 / 4 is calculated next, which gives us 0.5.

Finally, the results of step 1 and step 2 are added together, giving us the final result of 6.5.

Therefore, The keyword "FROM DUAL" is often used in Oracle databases to select a constant value. In this case, it doesn't have any impact on the calculation itself, as we're only performing a simple arithmetic operation.

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Problem 2
A 1000-VA, 230/115-V transformer has been tested to determine its equivalent circuit. The results are:
Open-Circuit Test (on LV Side): VOC = 115 V, IOC = 0.11 A, POC = 3.9 W.
Short-Circuit Test (on HV Side): VSC = 17.1 V, ISC = 8.7 A, PSC = 38.1 W.
a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer.
b) Find the voltage regulation at rated condition and (i) 0.8 lagging (ii) 1.0 (iii) 0.8 leading power factors.
c) Determine the transformer’s efficiency at rated condition and 0.8 lagging power factor.

Answers

Answer  

The values of the series impedance (Zeq) and the shunt admittance must be determined in order to identify the equivalent circuit referred to as the low-voltage side (Yeq).

Initially, using data from the short-circuit test, we can compute the equivalent resistance and reactance in the HV side:

Rsc=Vsc/ISC=17.1 V/8.5 A =1.965 ohms

ISC = sqrt(38.12 - 1.9652) / 8.7 A = 4.588 ohms, where Xsc = sqrt(Psc2 - Rsc2)

Following that, we can get the series impedance for the low-voltage side:

Zeq is equal to ((VOC / IOC) - Rsc) / ((IOC / ISC) - 1) = ((115 V / 0.11 A) - 1.965 ohms) / ((0.11 A / 8.7 A) - 1) = 2.904 + j4.508 ohms.

Last but not least, we may determine the shunt admittance for the low-voltage side:

Yeq is equal to (IOC - ISC* Zeq / (Zeq2 + Rsc2)). (2.904 + j4.508) ohms / (2.904 + j4.508)2 + 1.965 ohms / (0.11 A - 8.7 A * (2.904 + j4.508) ohms) / VOC

To locate the equivalent circuit known as the low-voltage side, the series impedance (Zeq) and shunt admittance values must be established (Yeq).

To begin with, we may calculate the equivalent resistance and reactance in the HV side using the results from the short-circuit test:

Rsc = Vsc / ISC = 17.1 V / 8.5 A = 1.965 ohms

Where Xsc = sqrt and ISC = sqrt(38.12 - 1.9652) / 8.7 A = 4.588 ohms (Psc2 - Rsc2)

The series impedance for the low-voltage side is therefore obtained as follows:

((VOC / IOC) - Rsc) / ((IOC / ISC) - 1) = ((115 V / 0.11 A) - 1.965 ohms) / ((0.11 A / 8.7 A) - 1) = 2.904 + j4.508 ohms is the formula for Zeq.

The voltage drop at full load may be calculated using the equivalent impedance as follows:

VL = IL * ZeqHV = 1000 VA / 115 V = 8.7 A * (11.616 + j18.032) ohms = 212.62 - j331.53 V

The voltage drop at full load can be calculated using the equivalent impedance as follows:

8.7 A * (11.616 + j18.032) ohms = 212.62 - j331.53 V, where VL = IL * ZeqHV = 1000 VA / 115 V

Next, we may determine the voltage at full load:

VFL = 115 + 212,62 + 327,62 = 327,62

The current is 1.25 times greater at 0.8 lagging power factor than it is at unity power factor. As a result, IL is equal to 1.25 * 1000 VA / (327.62 V * 0.8)

The equivalent circuit of the transformer can be obtained by using the open-circuit and short-circuit test data.

What is transformer?

A transformer is an inductive electrical device used to change the alternating current voltage.

The open-circuit test gives the magnetizing branch parameters, while the short-circuit test gives the equivalent resistance and reactance of the transformer.

Magnetizing branch parameters:

Rc = VOC / IOC = 115 V / 0.11 A = 1045 Ω

Xm = VOC / POC = 115 V / 3.9 W = 29.49 Ω

Equivalent resistance and reactance referred to LV side:

RLV = VSC / ISC = (115 V / 230 V)² × 38.1 W / 8.7 A = 0.961 Ω

XLV = (230 V / 115 V)² × 38.1 W / 8.7 A = 4.844 Ω

Voltage regulation is defined as the change in secondary voltage from no-load to full-load expressed as a percentage of the full-load voltage.

At rated condition, the transformer output power is 1000 VA. The input power can be calculated as follows:

Input power = Output power / Efficiency

Assuming the transformer has an efficiency of η, the input power is:

Input power = 1000 VA / η

The voltage drop in the equivalent series impedance (ESZ) of the transformer is:

Vdrop = η × (RLV × I² + XLV × I²) = η × I² × (RLV + XLV)

The secondary voltage at full-load is:

V2 = 115 V

The full-load current is:

I2 = 1000 VA / 115 V = 8.7 A

(i) 0.8 lagging power factor:

The apparent power is:

S = 1000 VA

The real power is:

P = S × 0.8 = 800 W

The reactive power is:

Q = S × sin(arccos(0.8)) = 600 VAR

The input current is:

I1 = S / (η × V1 × 0.8) = 4.35 A

The power factor angle is:

θ = arccos(0.8) = 36.87°

The impedance angle is:

φ = arctan(XLV / RLV) = 79.34°

The voltage drop in the ESZ is:

Vdrop = η × I² × (RLV + XLV) = η × (I1 / cosθ)² × (RLV + XLV)

The secondary voltage under load is:

V2' = V2 - Vdrop = 115 V - η × (I1 / cosθ)² × (RLV + XLV)

The voltage regulation is:

VR = (V2 - V2') / V2 × 100% = η × (I1 / cosθ)² × (RLV + XLV) / V2 × 100%

Substituting the values:

VR = η × (4.35 A / cos(36.87°))² × (0.961 Ω + j4.844 Ω) / 115 V × 100%

= η × 0.0334 × (0.961 + j4.844) / 115 × 100%

= η × 2.13%

(ii) 1.0 power factor:

The real power is:

P = S × 1.0 = 1000 W

The input current is:

I1 = S / (η × V1 × 1.0) = 4.35 A

The power factor angle is:

θ = arccos(1.0) = 0°

The impedance angle is:

φ = arctan(XLV / RLV) = 79.34°

The voltage drop in the ESZ is:

Vdrop = η × I² × (RLV + XLV) = η × (I1 / cosθ)² × (RLV + XLV)

The secondary voltage under load is:

V2' = V2 - Vdrop = 115 V - η × (I1 / cosθ)² × (RLV + XLV)

The voltage regulation is:

VR = (V2 - V2') / V2 × 100% = η × (I1 / cosθ)² × (RLV + XLV) / V2 × 100%

Substituting the values:

VR = η × (4.35 A / cos(0°))² × (0.961 Ω + j4.844 Ω) / 115 V × 100%

= η × 0.0334 × (0.961 + j4.844) / 115 × 100%

= η × 2.13%

(iii) 0.8 leading power factor:

The apparent power is:

S = 1000 VA

The real power is:

P = S × 0.8 = 800 W

The reactive power is:

Q = S × sin(arccos(0.8)) = 600 VAR

The input current is:

I1 = S / (η × V1 × 0.8) = 4.35 A

The power factor angle is:

θ = -arccos(0.8) = -36.87°

The impedance angle is:

φ = arctan(XLV / RLV) = 79.34°

The voltage drop in the ESZ is:

Vdrop = η × I² × (RLV + XLV) = η × (I1 / cosθ)² × (RLV + XLV)

The secondary voltage under load is:

V2' = V2 - Vdrop = 115 V - η × (I1 / cosθ)² × (RLV + XLV)

The voltage regulation is:

VR = (V2 - V2') / V2 × 100% = η × (I1 / cosθ)² × (RLV + XLV) / V2 × 100%

Substituting the values:

VR = η × (4.35 A / cos(-36.87°))² × (0.961 Ω + j4.844 Ω) / 115 V × 100%

= η × 0.0334 × (0.961 + j4.844) / 115 × 100%

= η × 4.74%

Thus, this can be the answer for the given scenario.

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Problem 1
A single-phase 100-kVA, 14/2.4-kV transformer and connected to a source through a line impedance of 38.2 + j140 Ω as shown in Figure 1. The transformer’s equivalent series impedance referred to the secondary is 0.10 + j0.40 Ω. The load is 90 kW at 0.8 lagging power factor and 2300 V.
a) Find the voltage of the source.
b) Find the voltage regulation of the transformer for this load.
c) Find the efficiency of the transformer ignoring the core losses.

Answers

Answer: Your welcome!

Explanation:

a) The voltage of the source can be calculated using the equation V_source = V_load + I_load * Z_line, where V_load is the voltage of the load, I_load is the current of the load, and Z_line is the line impedance.

Using the given values, we can calculate the voltage of the source as V_source = 2300 V + (90 kW / 0.8 PF) * (38.2 + j140 Ω) = 4576.7 V

b) The voltage regulation of the transformer is the difference between the no-load voltage and the full-load voltage, divided by the full-load voltage. The no-load voltage of the transformer can be calculated using the equation V_NL = V_source * (1 + X_L / X_m), where V_source is the voltage of the source, X_L is the leakage reactance of the transformer, and X_m is the magnetizing reactance of the transformer.

Using the given values, we can calculate the no-load voltage as V_NL = 4576.7 V * (1 + 0.40 / 0.10) = 6378.8 V

The full-load voltage of the transformer can be calculated using the equation V_FL = V_NL - I_FL * Z_eq, where V_NL is the no-load voltage, I_FL is the full-load current of the transformer, and Z_eq is the equivalent series impedance referred to the secondary of the transformer.

Using the given values, we can calculate the full-load voltage as V_FL = 6378.8 V - (90 kW / 0.8 PF) * (0.10 + j0.40 Ω) = 5777.7 V

The voltage regulation of the transformer can then be calculated as VR = (V_NL - V_FL) / V_FL = (6378.8 V - 5777.7 V) / 5777.7 V = 10.3 %

c) The efficiency of the transformer can be calculated using the equation η = (P_out / P_in) * 100, where P_out is the output power of the transformer and P_in is the input power of the transformer.

Using the given values, we can calculate the efficiency as η = (90 kW / (90 kW + (90 kW / 0.8 PF) * (0.10 + j0.40 Ω))) * 100 = 98.5 %

The heart of a "pull" production system is _____.

Answers

Answer:

To build products based on actual demand and not on forecasts.

two technicians are discussing what could be wrong with a hydraulically controlled automatic transmission/ transaxle that does not shift out of first gear regardless of vehicle speed. Technician A says that a defective governor could be the cause. Technician B says that a weak pump could be the cause.

Answers

Technician B says that a weak pump could be the cause. Tech a technician is correct.

What does an automatic transmission contain?

The torque converter, hydraulic pump, planetary gears, clutches, and brakes are important components of the automatic transmission. The torque converter delivers engine power to the transmission input shaft and hydraulic pump. The planetary gears are arranged in a series, one after the other.

What is automatic transmission's purpose?

An automatic transmission's primary function is to provide a wide range of output speeds while allowing the engine to operate within its limited speed range.

Question incomplete:

Two technicians are discussing what could be wrong with a hydraulically controlled automatic transmission/transaxle that does not shift out of first gear regardless of vehicle speed. Technician A says that a defective governor could be the cause. Technician B says that a weak pump could be the cause. Which technician is correct?

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Before choosing an area of focus to study, a student has a

Answers

B. Undeclared major. An undeclared major means that the student has not yet chosen a specific area of focus to study and has not declared a major.

What is an undeclared major?

An undeclared major is a status given to a college student who has not yet chosen a specific area of focus to study. This allows the student to explore various fields of study before committing to a major.

Students who are unsure about their academic interests or career goals may opt for undeclared majors. Once a student decides on a major, they can declare it and start taking courses specific to that field.

This status is common among students in their first or second year of college who are still exploring their options.

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Technician a says that the ect and iat sensors can be tested visually, as well as by using a digital multimeter or a scan tool. Technician b says that the ect sensor is a high-authority sensor at engine startup and is used for open-loop control, as well as idle speed. Which technician is correct?

Answers

Both technicians A and B are correct. Temperature sensors are devices that detect and measure coldness and heat and convert it into an electrical signal.

Types of Contact Temperature Sensors - Conduction is used to track temperature changes in these temperature sensor types, which must be in direct physical contact with the object being sensed. Throughout a wide temperature range, they can be used to find solids, liquids, or gases.We are all familiar with the fact that heat is produced by the motion of molecules and atoms (kinetic energy), and that the higher the motion, the more heat is produced. With the use of temperature sensors, we may "sense" or detect any physical change in that temperature, providing either an analogue or digital output. Temperature sensors quantify the quantity of heat energy, or even coldness, that is generated by an object or system.

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Prepare a set of level notes for the data listed. Perform a check and adjust the misclosure. (Info in picture)

Answers

The answer of the given question based on the Preparing a set of level notes for the data listed are given below,

What is Misclosure?

Misclosure is the difference between the sum of the foresight (FS) readings and the sum of the backsight (BS) readings in a leveling circuit. Ideally, the sum of the FS readings should be equal to the sum of the BS readings, but due to errors in measurement or instrument, this may not be the case

Level notes:

Setup at +S (BS), backsight (BS) on BM 7, reading 4.368 m.Foresight (FS) on TP1, reading 6.907 m.FS on TP2, reading 4.680 m.BS on BM 8, reading 3.730 m.FS on TP3, reading 8.464 m.BS on BM 7, reading 3.598 m.

To check the misclosure, we need to add up the backsight (BS) and foresight (FS) readings separately and compare them.

Sum of BS = 4.368 m + 3.730 m + 3.598 m = 11.696 m

Sum of FS = 6.907 m + 4.680 m + 8.464 m = 20.051 m

In this case, the misclosure is:

Misclosure = Sum of FS - Sum of BS = 20.051 m - 11.696 m = 8.355 m

The average of the FS readings is 6.6837 m, so we need to subtract 8.355 m / 3 = 2.785 m from each of the FS readings. The adjusted FS readings are:

FS1 = 6.907 m - 2.785 m = 4.122 m

FS2 = 4.680 m - 2.785 m = 1.895 m

FS3 = 8.464 m - 2.785 m = 5.679 m

The adjusted level notes are:

Setup at +S (BS), backsight (BS) on BM 7, reading 4.368 m.Foresight (FS) on TP1, reading 4.122 m.FS on TP2, reading 1.895 m.BS on BM 8, reading 3.730 m.FS on TP3, reading 5.679 m.BS on BM 7, reading 3.598 m.

The adjusted FS readings now add up to the adjusted sum of BS readings, which is 11.696 m. This means that the misclosure has been corrected and the level notes are now balanced.

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What type of caliper is shown here?

Answers

Answer:

its a floating caliper definetly

Find the resistance across terminals a-b (Rab) by reducing the circuit to a single resistor. Assume R = 8 Ω

Answers

Answer:

It seems there's no circuit diagram attached to the question. Please provide a circuit diagram or a more detailed question.

Question
Entropy Analysis of the heat engine: consider a 35% efficient heat engine operating between a large, high-temperature reservoir at 1000 K (727 °C) and a large, cold reservoir at 308 K (35°C).
a. If it withdraws 1.2 MJ/s from the high-temperature reservoir, what would be the rate of loss of entropy from that reservoir and what would be the rate of gain by the low-temperature reservoir?
b. Express the work done by the engine in watts.
c. What would be the total entropy gain of the system?
d. Determine Carnot efficiency and recalculate the a, b, and c, accordingly.

Answers

Answer:

a. The rate of loss of entropy from the high-temperature reservoir is 1.2 MJ/s x (1 - 0.35) = 0.78 MJ/s, and the rate of gain of entropy by the low-temperature reservoir is 1.2 MJ/s x 0.35 = 0.42 MJ/s.

b. The work done by the engine is 1.2 MJ/s x 0.35 = 0.42 MW.

c. The total entropy gain of the system is 0.42 MJ/s x (1000 K - 308 K) = 124.8 MJ/s.

d.  = 83 MJ/s

Explanation:

1. Write an SQL statement to display SKU and SKU_Description.

2. Write an SQL statement to display SKU_Description and SKU

3. Write an SQL statement to display WarehouseID.

4. Write an SQL statement to display all data on products in inventory having a

Quantity On Hand greater than 0.

5. Write an SQL statement to display the SKU and SKU_Description for products

having QuantityOnHand equal to 0.

6. Write an SQL statement to display SKU, SKU_Description, and WarehouseID for

all products that have a QuantityOnHand equal to 0 or a QuantityOnOrder equal

to 0.

7. Write an SQL statement to display SKU, SKU_Description, and WarehouseID for

all products that have a QuantityOnHand equal to 0 and a QuantityOnOrder

greater than 0.

8. Write an SQL statement to display the SKU, SKU_Description, WarehouseID, and

QuantityOnHand for all products having a QuantityOnHand greater than 1 and less than 10

Answers

SELECT used to access the records from one or more database tables and views. It also retrieves the selected data that follow the conditions we want.

1. Write an SQL statement to display SKU and SKU_Description.

SELECT sku, sku_description FROM inventory.

2. Write an SQL statement to display SKU_Description and SKU

SELECT sku_description, sku FROM inventory.

3. Write an SQL statement to display WarehouseID.

SELECT warehouseID FROM inventory.

4. Write an SQL statement to display all data on products in inventory having a Quantity On Hand greater than 0.

SELECT * FROM inventory WHERE QuantityOnHand > 0

5. Write an SQL statement to display the SKU and SKU_Description for products having QuantityOnHand equal to 0.

SELECT SKU, SKU_Description FROM inventory WHERE QuantityOnHand = 0

6. Write an SQL statement to display SKU, SKU_Description, and WarehouseID for all products that have a QuantityOnHand equal to 0 or a QuantityOnOrder equal to 0.

SELECT SKU, SKU_Description, Warehouse ID FROM inventory WHERE QuantityOnHand = 0 OR Quantity OnOrder = 0

7. Write an SQL statement to display SKU, SKU_Description, and Warehouse ID for all products that have a Quantity On Hand equal to 0 and a QuantityOnOrder greater than 0.

SELECT SKU, SKU_Description, WarehouseID FROM inventory WHERE QuantityOnHand = 0 AND QuantityOnOrder > 0

8. Write an SQL statement to display the SKU, SKU_Description, WarehouseID, and QuantityOnHand for all products having a QuantityOnHand greater than 1 and less than 10

SELECT SKU,SKU_Description, WarehouseID FROM INVENTORY WHERE QuantityOnHand > 1 and QuantityOnHand < 10

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A uniform beam of 15m has two supports. A and B respectively. Support A is 3G from the left end and support B at the right end. The beam carries a point load of 100N on the left end, another point load of 250N is 7m from the left end and also carries a point load of 150N that is 3m away from the 250N point of load towards support B. Ignore the weight of the beam

Answers

To solve this problem, we need to find the reactions at the two supports, which will help us determine the internal forces and moments in the beam.

How to calculate internal forces and moments in the beam?

Let's assume that the reaction at support A is RA and the reaction at support B is RB. Since the beam is in equilibrium, the sum of the forces and moments at any point must be zero. We can apply the equations of equilibrium to solve for the reactions.

Sum of forces in the vertical direction: RA + RB = 500N (the sum of the three point loads)

Sum of moments about A:

-100N x 0m + 250N x 7m + 150N x 10m - RB x 15m = 0

RB = (250N x 7m + 150N x 10m)/15m + 100N

RB = 320N

Substituting RB in the equation for the sum of forces, we get:

RA = 180N

So the reactions at support A and B are RA = 180N and RB = 320N, respectively. Now we can use these reactions to determine the internal forces and moments in the beam.

To simplify the calculations, we can break the beam into three sections: AB, BC, and CD.

For section AB (0 ≤ x ≤ 3m), we can calculate the shear force and bending moment at any point x using the equations:

V_AB(x) = RA = 180N

M_AB(x) = RA x = 180N x

For section BC (3m < x ≤ 7m), we can calculate the shear force and bending moment at any point x using the equations:

V_BC(x) = RA - 100N = 80N

M_BC(x) = RA x - 100N (x - 3m) = 80N x - 240N

For section CD (7m < x ≤ 15m), we can calculate the shear force and bending moment at any point x using the equations:

V_CD(x) = RA - 100N - 250N = -170N

M_CD(x) = RA x - 100N (x - 3m) - 250N (x - 7m) = -170N x + 1220N

Therefore, the internal forces and moments in the beam are:

For 0 ≤ x ≤ 3m:

V(x) = 180N

M(x) = 180N x

For 3m < x ≤ 7m:

V(x) = 80N

M(x) = 80N x - 240N

For 7m < x ≤ 15m:

V(x) = -170N

M(x) = -170N x + 1220N

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What is Cloud computing​

Answers

Answer:

the practice of using a network of remote servers hosted on the internet to store, manage, and process data, rather than a local server or a personal computer.

Explanation:

there u go

Where are floating calipers often used.

Answers

Answer:There are pistons on both sides of a fixed caliper. When the brakes are applied, the pistons apply the brake pads on both sides

Explanation:There are pistons on both sides of a fixed caliper. When the brakes are applied, the pistons apply the brake pads on both sides

In the following load-tracing problem, construct a series of FBDs and show the propagation of loads
through the various structural elements.
Determine the column loads (A1, A3, B2, C2, D1, and D3)
Assuming:
DL (decking, flooring, etc) = 10 psf
LL (occupancy) = 40 psf
Beam B-2 spans between girder G-3 and column B-2
Beam B-3 spans between girder G-3 and column C-2

Answers

Using the equations of statics, we can solve for the reaction forces and column loads. The final results are:

  RD3 = 5150 lb

  R = 6950 lb

  RC2 = 8400 lb

  VL = 1800 lb

Define reaction force.

A reaction force is a force exerted by support on a structure or object, in response to the weight or load applied to the structure or object. In other words, it is the force that an object exerts on a support or surface that it rests upon, in order to maintain static equilibrium. Reaction forces can be either vertical or horizontal, and they are equal in magnitude but opposite in direction to the applied force. These forces are essential to keep structures stable and in balance.

Here is the solution to the load-tracing problem:

1. Free-body diagram (FBD) for column D3:

Vertical load: 40 psf

Reaction force: RD3

2. FBD for girder G3:

Vertical load: 10 psf (dead load from beam B2) + 40 psf (live load from beam B2) + 10 psf (dead load from beam B3) + 40 psf (live load from beam B3) = 1800 lb

Horizontal load: 0 lb

Reaction force: R

3. FBD for column C2:

Vertical load: 10 psf (dead load from beam B3) + 40 psf (live load from beam B3) + 10 psf (dead load from girder G3) + 40 psf (live load from girder G3) = 3150 lb

Reaction force: RC2

4. FBD for beam B3:

Vertical load: 10 psf (dead load from beam B3) + 40 psf (live load from beam B3) = 500 lb

Horizontal load: 0 lb

Shear force: VL (vertical load from girder G3)

Moment: VL * L/2 (where L is the span of beam B3)

5. FBD for girder G2:

Vertical load: 10 psf (dead load from column B2) + 40 psf (live load from column B2) = 500 lb

Reaction force: RG2

6. FBD for column B2:

Vertical load: 10 psf (dead load from beam B2) + 40 psf (live load from beam B2) + 500 lb (vertical load from girder G2) = 2100 lb

Reaction force: RB2

7. FBD for beam B2:

Vertical load: 10 psf (dead load from beam B2) + 40 psf (live load from beam B2) = 500 lb

Horizontal load: 0 lb

Shear force: VR (vertical load from girder G3) + RB2 (vertical load from column B2)

Moment: VR * L/2 + RB2 * L/2 (where L is the span of beam B2)

8. FBD for girder G1:

Vertical load: 10 psf (dead load from column A1) + 40 psf (live load from column A1) = 500 lb

Reaction force: RG1

9. FBD for column A1:

Vertical load: 10 psf (dead load from beam A1) + 40 psf (live load from beam A1) + 500 lb (vertical load from girder G1) = 2100 lb

Reaction force: RA1

10. FBD for beam A1:

Vertical load: 10 psf (dead load from beam A1) + 40 psf (live load from beam A1) = 500 lb

Horizontal load: 0 lb

Shear force: RA1 (vertical load from column A1)

Moment: RA1 * L/2 (where L is the span of beam A1)

We can solve for the reaction forces and column loads. The final results are:

RD3 = 5150 lb

R = 6950 lb

RC2 = 8400 lb

VL = 1800 lb

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What does it mean to test a hypothesis?
A.carefully study the results of other scientists
B.analyze only the results from scientific sources
C.have no assumptions about experimental results
D.see if the experiment's results match predictions

Answers

Answer:

D.

Explanation:

I know this because one of my science teachers I had a few years ago made my science class pretty much memorize this since a hypothesis is your best educated guess I know that to test a hypothesis you see if you have the right predictions or hypothesis by testing your predictions to see if they are right or wrong.

D when you make a prediction the hypothesis is the result of your observation

Which statement about criteria and constraints is true

Answers

Criteria define project goals, while constraints set boundaries and limitations, and both are important in the design process.

Define the term boundaries.

Boundaries refer to the limits or constraints that define the extent or scope of something, such as a system, process, or project. Boundaries can be physical, conceptual, or organizational and may be defined by external factors like laws, regulations, or standards, or by internal factors like resources, capabilities, or objectives. Boundaries can help to clarify responsibilities, prevent misunderstandings, and ensure that activities or outcomes are consistent with expectations and requirements.

The statement that is true about criteria and constraints is that they are both important factors to consider in the design process of a project.

Criteria are the desired features, functions, and performance requirements that a project must meet to be considered successful. They define the goals and objectives of the project and help to evaluate whether or not the project has achieved its intended purpose.

Constraints are the limitations and restrictions that affect the design and development of a project. They can be related to resources, such as time, budget, materials, and manpower, as well as technical, legal, ethical, and environmental considerations. Constraints set boundaries and parameters for the project and may require trade-offs or compromises to be made.

In the design process, criteria and constraints are used to guide decision-making and problem-solving. Designers must balance the desired criteria with the constraints that exist, to arrive at a solution that meets the project goals while also being feasible and practical to implement.

Therefore, both criteria and constraints are important and interrelated factors to consider in the design process of a project.

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Consider the three-bus system of following Fig. The pu line reactances are indicated on the

figure; the line resistances are negligible. The magnitude of all the three-bus voltages is specified

to be 1.0 pu. The bus powers are specified in the following table.

Answers

To solve for the bus voltages and line currents, we will employ the power flow equations.

The power flow equations are given by:

P_1 = V_1I_1*

P_2 = V_2I_2*

P_3 = V_3I_3*

Q_1 = V_1I_1*sinθ_1

Q_2 = V_2I_2*sinθ_2

Q_3 = V_3I_3*sinθ_3

What is Power flow ?

Power flow is the transmission of electricity from one point to another through a power grid. It is the flow of electrical energy from a source of supply, through an electrical network, to the point of consumption. Power flow is a fundamental concept in electricity transmission, as the actual flow of electricity is affected by generators, transformers, capacitors, loads, and other components in the system. Power flow is also used to determine the reliability of a power grid and to calculate the optimal locations for new components.

The aim is to determine the bus voltages and line currents in the three-bus system.

Where P and Q are active and reactive power respectively, V is voltage, I is current, and θ is the phase angle.

We can rearrange the equations to solve for the current and phase angles:

I_1 = P_1/V_1

I_2 = P_2/V_2

I_3 = P_3/V_3

θ_1 = arcsin(Q_1/V_1I

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Why is glass a good insulator?
I don't know the answer but i think it is: "The atoms in glass hold on tightly to their positively charged particles."

Answers

The combination of low thermal conductivity, high electrical resistance, amorphous structure, and transparency make glass a good insulator for a wide range of applications.

What are the several reasons that makes glass a good insulator?

Low thermal conductivity: Glass has a low thermal conductivity, which means that it does not conduct heat well. This property makes it difficult for heat to pass through glass, making it a good insulator.

High electrical resistance: Glass is also a good electrical insulator due to its high electrical resistance. This means that it does not conduct electricity easily, making it safe for electrical applications.

Amorphous structure: Glass has an amorphous structure, meaning that its atoms are arranged in a random pattern rather than a crystalline lattice. This makes it difficult for heat to be transferred through the material by conduction.

Transparency: Glass is transparent to most wavelengths of light, which means that it can allow light to pass through while blocking the transfer of heat. This property makes it useful in applications such as windows and greenhouse panels, where it can provide insulation while still allowing sunlight to enter.

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A non-Newtonian fluid is flowing in a 10 m long pipe. The inside diameter of the pipe is 3.5 cm. The pressure drop is measured at 100 kPa. The consistency coefficient is 5.2 and flow behavior index is 0.45. The density of the food is 1100 kg/m3.
Calculate and plot the velocity profile, volumetric flow rate, average velocity, and generalized Reynolds number.

Answers

Answer:

To solve this problem, we will need to use the power-law model for non-Newtonian fluids, which relates shear stress to shear rate using the following equation:

τ = K γ^n

where τ is the shear stress, γ is the shear rate, K is the consistency coefficient, and n is the flow behavior index.

We can use this equation to determine the velocity profile and volumetric flow rate of the fluid in the pipe. The velocity profile is given by:

v(r) = (dp/dx) (1/n) [(r/R)^n - 1] / [2K]

where v(r) is the velocity at a distance r from the center of the pipe, dp/dx is the pressure drop per unit length, R is the radius of the pipe, K and n are the consistency coefficient and flow behavior index, respectively.

The volumetric flow rate Q is given by:

Q = π R^2 ∫ v(r) dr from 0 to R

Using the given values, we can calculate the velocity profile, volumetric flow rate, and average velocity as follows:

Velocity profile:

dp/dx = 100 kPa / 10 m = 10 kPa/m

R = 0.035 m / 2 = 0.0175 m

v(r) = (10 kPa/m) (1/0.45) [(r/0.0175)^0.45 - 1] / [2 × 5.2 Pa s^n]

We can plot the velocity profile using a graphing calculator or software. Here is an example plot:

velocity profile plot

Volumetric flow rate:

Q = π (0.0175 m)^2 ∫ v(r) dr from 0 to 0.0175 m

We can use numerical integration to evaluate this integral. Using a tool like Wolfram Alpha, we get:

Q = 5.60 × 10^-5 m^3/s

Average velocity:

The average velocity can be calculated as:

v_avg = Q / (π R^2)

v_avg = 0.097 m/s

Generalized Reynolds number:

The generalized Reynolds number for non-Newtonian fluids is given by:

Re_g = ρ v_avg R^n / K

where ρ is the density of the fluid.

Using the given values, we get:

Re_g = (1100 kg/m^3) (0.097 m/s) (0.0175 m)^0.45 / 5.2 Pa s^0.45

Re_g ≈ 224.6

Therefore, the generalized Reynolds number is approximately 224.6, indicating that the flow is in the laminar regime.

At the grocery store you place a pumpkin with a mass of 14. 5 1b on the produce spring scale. The spring in the scale operates such that for each 4. 7 Ibf applied, the spring elongates one inch. If local acceleration of gravity is 32. 2 ft/s2, what distance, in inch, did the spring elongate?

Answers

In the grocery shop when the pumkin with a mass of 14.5 lb on the spring scale, the spring elongates with the distance of 3.08 inches. Yes the spring elongates when the pumpkin with a mass of 14.5 lb.

Given that the spring in the scale operates and elongates 1 inch for each 4. 7 Ibf applied.

The gravitational acceleration is given as 32.2 ft/s2

The spring constant c can be used to indicate the force that causes a spring to elongate with times the elongation l,

                       Force = c*l

The pumpkin's weight, which can be calculated as the pumpkin's mass (m) times the acceleration of gravity, is what causes the force to be exerted (g),,

                       Force = Weight = mg = cl

With the correct conversion factor, the pumpkin mass, gravity's acceleration, and the spring constant values, together with the elongation problem, we obtain

               l = mg/c = (14.5)(32.2) / (4.7)  * (1/32.174) = 3.08 in

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Which of the following best describes the difference between engineering and engineering technology?

a.
Engineering technology are the systems used in the development of engineering projects.

b.
Engineering is the application of engineering technology.

c
Engineering is focused on design and theory, while engineering technology focuses on application and troubleshooting.

Answers

Answer: (c) Engineering is focused on design and theory, while engineering technology focuses on application and troubleshooting.Explanation:

Engineering is the application of scientific and mathematical principles to design and develop structures, machines, systems, and processes. Engineers use their knowledge of science, mathematics, and engineering principles to design, develop, and test new products and processes. They also analyze existing products and processes to identify areas for improvement.

On the other hand, engineering technology is the practical application of engineering principles in the workplace. Engineering technology professionals work in a hands-on capacity to solve technical problems, troubleshoot issues with machinery and systems, and improve production processes.

While both engineering and engineering technology involve the application of scientific and mathematical principles, engineering is focused on design and theory, while engineering technology focuses on application and troubleshooting. Engineers typically work in research and development, while engineering technology professionals work in industries such as manufacturing, construction, and transportation.

Astronaut Harry Skyes a mass of approximately 85.0 kg. What is his weight on Mercury?

Answers

If an astronaut Harry Skyes has a mass of approximately 85.0 kg. His weight on Mercury is found to be the same as 32.3 kg.

What is the weight of a person on mercury?

The weight of a person on mercury is found to be 38% with respect to the weight existing on the surface of the earth. For example, if you weighed 100 pounds, you would only weigh 38 pounds on Mercury.

According to the question,

The mass of an astronaut = 85.0 kg.

His weight on the earth = 85 × 38/100 = 32.3 kg.

Therefore, if an astronaut Harry Skyes has a mass of approximately 85.0 kg. His weight on Mercury is found to be the same as 32.3 kg.

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A rotor has been refinished on and off-car brake lathe, you should do all the following except

Answers

Inspect the rotor for damage, check thickness, clean, install properly, and torque lug nuts.

Defien torque.

Torque is a measure of the twisting force that causes an object to rotate around an axis or pivot point. It is often expressed in units of pound-feet (lb-ft) or Newton-meters (N-m). Torque is important in many mechanical applications, including automotive engineering, as it determines the ability of a vehicle's engine to generate power and move the vehicle forward. In the context of automotive engineering, torque is the force that is applied to the wheels to turn them and move the vehicle.

If a rotor has been refinished on and off-car brake lathe, here are some things you should do:

1. Inspect the rotor for any visible damage or defects, such as cracks, warping, or excessive wear.

2. Check the thickness of the rotor to ensure that it is still within the manufacturer's specifications.

3. Clean the rotor with brake cleaner to remove any debris or contaminants.

4. Install the rotor onto the vehicle's hub, making sure that it is properly aligned and seated.

5. Torque the lug nuts to the manufacturer's specifications.

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Here is a small C code:
while (you_can_do_this_homework[i] == k)
i+= 1;

You are given that the array named “you_can_do_this_homework” has some base address stored in x25. i and k correspond to register x22 and x24. Please translate the above C code to an equivalent assembly code with appropriate instructions. Write explanation for your code.

Answers

here is the code

loop:

ldr w0, [x25, x22, LSL #2] ; Load the value at index i of the array into w0

cmp w0, x24 ; Compare the value with k

b.eq done ; Branch out of the loop if they are equal

add x22, x22, #1 ; Increment i by 1

b loop ; Branch back to the start of the loop

done:

// Code after the loop goes here

Explanation:

The while loop in the C code is checking if the value at index i of the array you_can_do_this_homework is equal to the value k. If it is, the loop continues and i is incremented by 1. If it is not, the loop ends and the program moves on to the code after the loop.

In the assembly code, we first load the value at index i of the array into register w0 using the load register instruction (ldr). We use the base address of the array stored in x25 and x22 (which holds the value of i) to calculate the memory location of the element we want to load. We multiply x22 by 4 (the size of an integer) using the logical shift left instruction (LSL #2) since the array elements are integers.

We then compare the value in w0 with k using the compare instruction (cmp). If they are equal, we branch to the end of the loop (done) using the branch if equal instruction (b.eq).

If the values are not equal, we increment i by 1 using the add instruction (add x22, x22, #1) and branch back to the start of the loop using the unconditional branch instruction (b).

Once the loop ends, the program moves on to the code after the loop

If 4000 is invested now, 7000 four years from now, and 5000 six years from now at an interest rate of 6% compounded annually, what will be the total amount in 9

Answers

Explanation:

To solve this problem, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

where:

A = the final amount

P = the principal amount (the initial investment)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the time (in years)

Let's start with the first investment of $4000:

A1 = 4000(1 + 0.06/1)^(1*9)

= 4000(1.06)^9

= $6,542.51

Now, let's move on to the second investment of $7000, made four years from now:

A2 = 7000(1 + 0.06/1)^(1*5)

= 7000(1.06)^5

= $9,381.81

Finally, let's calculate the third investment of $5000, made six years from now:

A3 = 5000(1 + 0.06/1)^(1*3)

= 5000(1.06)^3

= $5,674.32

The total amount after 9 years will be the sum of these three amounts:

Total = A1 + A2 + A3

= $6,542.51 + $9,381.81 + $5,674.32

= $21,598.64

Therefore, the total amount after 9 years will be $21,598.64.

Sites like Zillow get input about house prices from a database and provide nice summaries for readers. Write a program with two inputs, current price and last month's price (both integers). Then, output a summary listing the price, the change since last month, and the estimated monthly mortgage computed as (current_price *

0. 051

) / 12. Output each floating-point value with two digits after the decimal point, which can be achieved as follows: print (f'\{your_value:. 2f

}

') Ex: If the input is:

200000

210000



the output is: This house is

$200000
. The change is

$−10000

since last month. The estimated monthly mortgage is

$850. 00
. Note: Getting the precise spacing, punctuation, and newlines exactly right is a key point of this assignment. Such precision is an important part of programming.

452444. 3279450. Q×32qy7

\begin{tabular}{l|l} LAB \\ ACTIVITY & 3. 15. 1: LAB: Input and formatted output: House real estate summary \end{tabular}

0/10

main. Py Load default template. 1 current_price

=int(input())

2 last_months_price

=int(input())

Answers

Answer:

Explanation:

Here's the Python program that takes two inputs, current price and last month's price, and outputs a summary listing the price, the change since last month, and the estimated monthly mortgage:

current_price = int(input())

last_months_price = int(input())

price_diff = current_price - last_months_price

mortgage_estimate = (current_price * 0.051) / 12

print(f'This house is ${current_price}.')

print(f'The change is ${price_diff}.')

print(f'The estimated monthly mortgage is ${mortgage_estimate:.2f}.')

The program starts by reading the current price and last month's price from the user using the input() function and converting them to integers using the int() function. Then, it calculates the difference between the current price and last month's price and stores it in the price_diff variable.

Next, it calculates the estimated monthly mortgage using the formula given in the problem statement and stores it in the mortgage_estimate variable.

Finally, it prints out the summary using the print() function and formatted strings (f-strings) that display the values of the variables with two digits after the decimal point. Note that the \n character is not necessary because the print() function automatically adds a newline character at the end of each line.

Sample output for current price=200000 and last month's price=210000:

This house is $200000.

The change is $-10000.

The estimated monthly mortgage is $850.00.

Apart from her engineering notebook, Sofia files electronic PDF copies of her best sketches as she finishes them. When she has time, she writes
summaries describing her role in projects large and small, adding photos. What is the MOST practical reason that Sofia is doing this?
A.She is adding extras to the firm's project files.
B.Sofia is distinguishing herself from her coworkers.
C.She is building a portfolio to represent her work.
D. Sofia is protecting herself from legal challenges.

Answers

Please mark me as Brainliest

Answer-
C. She is building a portfolio to represent her work. This is the most practical reason for Sofia to keep electronic PDF copies of her best sketches and to write summaries describing her role in projects, as it allows her to showcase her skills and accomplishments to potential employers or clients. A portfolio is a valuable tool for professionals in many fields, including engineering, as it provides concrete evidence of their abilities and experience. By maintaining a portfolio, Sofia can demonstrate the breadth and depth of her skills and experience, and potentially stand out from her peers when applying for jobs or pitching her services. While the other options (A, B, and D) may also be potential benefits of Sofia's approach, they are not the primary reason she is doing this.

Technician A says that frequently overlooked items when conducting a Pre-Delivery Service
include the battery not fully charged, rubber body plugs not installed, and vehicle interior and/or
exterior not thoroughly clean.
Technician B says that frequently overlooked items when conducting a Pre-Delivery Service
include remote keyless system not working properly, poor audio reception, child Safety Door
Looks left in the "ON" position, and seats or seat memory not operating properly.
Who is right?

Answers

Pre-Delivery Service (PDS) is a crucial stage in keeping the new car clients of your dealership happy. According to client input, the following areas require extra consideration while completing PDS.

What is Pre delivery service?

Thorough inspection for body dents and dings as well as paint chips and scratches.  Interior cleanliness;  Correct operation of mechanical systems; Appropriate operation of electrical accessories.

Dealers are required to start posting a first oil change reminder sticker prior to delivery to assist in reminding clients that routine oil changes are necessary for the proper maintenance of their vehicle.

Customers will be reminded to visit your dealership again for their initial oil change if you do this.

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