The practices don't assist people survive earthquakes or safeguard property safety precautions to take when an earthquake occurs.
What are the basic plans for buildings that can withstand earthquakes?The ability of something like a building to bend, wobble, and deform again without collapsing is referred to as ductility, and it is frequently incorporated into earthquake-resistant designs. When subjected to the either vertical or horizontal shear stresses of an earthquake, a ductile structure can bend and flex.
Do structures withstand earthquakes?Based just on seismic dangers in the area, buildings are made to endure a particular amount of shaking. For instance, a structure in Los Angeles would be constructed to withstand a stronger earthquakes than one in Nyc. But, seismologists do not often know the precise size.
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A newspaper carrier pulls a wagon with a force of 275 N at an angle of 45° to the horizontal. How much work is required to move the wagon 8 m?
Answer: 1100 [tex]\sqrt{2[/tex] N -m
Explanation:
As work = force × displacement
In which connection the Vi=V=V2=...? And why?
The sum of the separate voltages in a series circuit, or V = V1+V2, determines the total voltage. Its total resistance (aka load) of a circuit is, as you might assume, equal to the sum individual resistors, R = R1 + R2.
How much voltage is present in a parallel connection?There are two or even more pathways for current to travel through in a parallel circuit. Each element of the parallel connection has the same voltage applied to it. The total flow of current from the source is equivalent to the total of a currents across each path.
What does resistor series connection mean?If the identical amount of current passes through each resistor at the same time, two or even more resistors are considered to be linked in series. That voltage over each resistor in such circuits varies. If any resistor in a linked to the concepts breaks or has a problem, the circuit as a whole is shut off.
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4. An ice skater is spinning on the ice at 4.00 rev/s. If the skater’s nose is 0.120 m from the axis of rotation, what is the centripetal acceleration of his nose?
The centripetal acceleration of the ice skater spinning on the ice at 4.00 rev/s whose nose is 0.120 m from the axis of rotation is [tex]75.78m/s^2[/tex]
Given the rate of revolutions of a skater = 4rev/s
The distance of nose from skater = 0.120m
Let the centripetal acceleration of his nose = ac
The centripetal acceleration of an object moving in a circular path can be calculated using the equation:
[tex]ac = (v^2)/r[/tex]
where v is the velocity of the object, and r is the radius of the circle.
In this case, the angular velocity of the skater is 4.00 rev/s.
Since 1 revolution is = 2π radians,
the skater's angular velocity can be expressed as:
v = rω such that
[tex]\omega = (4.00 rev/s) * (2\pi radians/1rev) = 8\pi rad/s = 25.13rad/s[/tex]
Using the equation above, the centripetal acceleration of the skater's nose can be calculated as:
[tex]ac = \omega^2r^2/r = \omega^2r[/tex]
[tex]ac = (25.13 radians/s)^2*0.120 m[/tex]
[tex]ac = 75.78m/s^2[/tex]
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A velocity field is given by u = Ax, v = -Ay; the units of velocity are m/s; x and y are given in meters; A = 0.3 s-¹. a) Obtain an equation for the streamlines in the xy plane. b) Plot the streamline passing through the point (xo, yo) = (2,8). c) Determine the velocity of a fluid particle at the point (2,8). d) If the fluid particle passing through the point (xo, yo) is marked at time t = 0, determine the location of the particle at time t = 6 s. e) What is the velocity of this fluid particle at time t = 6 s? f) Show that the equation of the fluid particle path (i.e., the pathline) is the same as the equation of the streamline.
Answer:
Explanation:
(A)The equation for the streamlines can be obtained by equating the differential element of the stream function to zero:
ψ = constant
dψ = 0
We know that u = ∂ψ/∂y and v = -∂ψ/∂x, so
dψ = udy - vdx
0 = Ady(x-x0) - Adx(y-y0)
0 = Ady x - Adx y - Ady x0 + Adx y0
0 = x(A dy) - y(A dx) + (dx y0 - dy x0)A
Thus, the equation for the streamlines is:
ˣ²-ʸ² = C
where C is a constant.
(B) To plot the streamline passing through point (2,8), we need to substitute these values into the equation for the streamline:
2² - 8² = C
C = -60
So the equation for the streamline passing through the point (2,8) is:
ˣ²-ʸ² = -60
(C) To determine the velocity of a fluid particle at the point (2,8), we substitute x = 2 and y = 8 into the given velocity field:
u = Ax = (0.3 ˢ⁻¹)(2 m) = 0.6 m/s
v = -Ay = -(0.3 ˢ⁻¹)(8 m) = -2.4 m/s
Therefore, the velocity of the fluid particle at points (2,8) is (0.6 m/s, -2.4 m/s).
(D) If the fluid particle passing through the point (2,8) is marked at time t = 0, we can determine its location at time t = 6 s by using the following equations for the path of the fluid particle:
dx/dt = A x
dy/dt = -A y
We can separate the variables and integrate them to obtain the following:
x = x0 ᵉ⁽ᴬ ᵗ⁾
y = y0ᵉ⁽⁻ᴬ ᵗ⁾
Substituting x0 = 2, y0 = 8, and A = 0.3 ˢ⁻¹, we get:
x = 2 ᵉ(⁰.³ ᵗ)
y = 8 ᵉ(-⁰.³ ᵗ)
So the location of the fluid particle at time t = 6 s is:
x = 2 ᵉ(⁰.³⁶) = 7.13 m
y = 8 ᵉ(-⁰.³⁶) = 3.19 m
Therefore, the fluid particle is located at (7.13 m, 3.19 m) at time t = 6 s.
(E) To find the velocity of the fluid particle at time t = 6 s, we differentiate the equations for x and y with respect to time:
dx/dt = A x = 0.3(7.13) = 2.14 m/s
dy/dt = -A y = -0.3(3.19) = -0.96 m/s
Therefore, the velocity of the fluid particle at time t = 6 s is (2.14 m/s, -0.96 m/s).
The total amount of charge that has entered a wire at time t is given by the expression Q=(20C)(1−e−t/(2.0s)) , where t is in seconds and t≥0 . Part A Part complete Find an expression for the current in the wire at time t . Assume the numeric values in your entry are in SI units. Express your answer in terms of t . I(t) = (10)e−t2 Previous Answers Correct Part B What is the maximum value of the current?
This equation has no real solutions, so the current does not have a maximum value. Instead, it approaches a limiting value of 0 as t approaches infinity.
To find the expression for the current in the wire at time t, we need to take the derivative of the expression for the charge with respect to time.
Q = (20C)[tex](1 - e^(-t/2.0s))[/tex]
dQ/dt = (20C)(1/2.0s)[tex](e^(-t/2.0s))[/tex]
dQ/dt = (10C/s)[tex](e^(-t/2.0s[/tex]))
So the expression for the current in the wire at time t is:
I(t) = dQ/dt = [tex](10C/s)(e^(-t/2.0s))[/tex]
To find the maximum value of the current, we can take the derivative of the expression for the current with respect to time and set it equal to zero.
dI/dt = [tex]-(5C/s^2)(e^(-t/2.0s))[/tex]
Setting dI/dt equal to zero, we get:
[tex]-(5C/s^2)(e^(-t/2.0s))[/tex] = 0
[tex]e^(-t/2.0s)[/tex]= 0.
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EARTH AND SPACE SCIENCE!
Scientist that made several important observations that seemed to counter the current beliefs of the time held by the church in Rome. Sunspots and rough features on the moon countered the idea of perfect "heavens" while the phases of Venus and the moons of Jupiter orbited other bodies than the Earth.
a.) Johannes Kepler
b.) Galileo Galilei
c.) Tycho Brahe
d.) Sir Isaac Newton
b) Galileo Galilei. Galileo was an Italian scientist and astronomer who made several important observations that seemed to contradict the current beliefs of the Roman Catholic Church.
His observations included sunspots, rough features on the moon, the phases of Venus, and the moons of Jupiter orbiting other bodies than the Earth. These observations were instrumental in helping to demonstrate that the Earth was not the center of the Universe, as the Church had previously believed. He is often referred to as the "father of modern observational astronomy" and the "father of modern science.". Additionally, he made detailed studies of sunspots, which contradicted the idea of a perfect and unchanging heavens.
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Amanda runs a business in a market where all firms are price takers. Bob suggests that she lower her price to attract even more customers. Should Amanda follow Bob's suggestion? Should she consider raising her price?
Amanda should carefully consider the elasticity of demand, cost of production, and competition before deciding whether to lower or raise prices. The ultimate goal is to find the right balance between attracting customers and maintaining profitability.
In a market where all firms are price takers, lowering the price may attract more customers, but it may also lead to lower profit margins. It is essential to weigh the potential benefits and costs of lowering the price before making a decision.
Amanda should consider several factors before deciding whether to follow Bob's suggestion or raise her price. These factors may include the elasticity of demand for her products, the cost of production, the pricing strategy of her competitors, and the level of competition in the market.
If the demand for Amanda's products is elastic, meaning that customers are very sensitive to price changes, lowering the price may increase the quantity sold but may not lead to higher revenues. In this case, Amanda may need to consider other strategies to increase revenue, such as expanding her product line or improving the quality of her products.
If the demand for Amanda's products is inelastic, meaning that customers are less sensitive to price changes, lowering the price may lead to increased revenue. However, Amanda should still consider the cost of production and ensure that the lower price still results in a profit.
Raising the price may be a viable option if Amanda has a unique product or a competitive advantage over her competitors. A higher price may signal higher quality or exclusivity, which can attract customers who are willing to pay a premium for the product. However, Amanda should ensure that the price increase does not lead to a significant decline in the quantity sold.
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which patterns do you notice about the intensities of the reflected and the refracted rays? What can you conclude from this pattern?
The angle on incidence and the characteristics of the objects involved determine how intense the reflected & refracted rays are. But generally speaking, there are some trends that may be seen.
Where is the ray being reflected?The incident & surface normal planes specify the plane in which light that Reflects always falls. The rules of reflection applies to images created by both curved and planar mirrors.
What do reflection and refracted light mean?Reflection is the act of light simply returning when it strikes a material on a plane. Refraction is the process by which light passes through a medium and undergoes a change that causes it to bend. The medium returns the light that it received.
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What is the height of a shelf that has a 15 kg object with 450 J of gravitational potential energy?
Hello and greetings postlauraann.
So, the height of a shelf with an object that has a mass of 15 kg and Epg of 450 J, is 3.06 meters.
Explanation:We have that this exercise is gravitational potential energy.
We learn that:
Gravitational potential energy is the energy associated with the position of an object in a gravitational field. It is defined as the work done to move an object from a reference position to its current position against the gravitational force.
The formula for gravitational potential energy is:
Epg = m * g * hwhere:
Epg is the gravitational potential energy (in joules)m is the mass of the object (in kilograms)g is the acceleration due to gravity (approximately 9.8 m/s² at the Earth's surface)h is the height of the object above a reference position (in meters)He is asking us to calculate the height of a shelf that has an object with a mass of 15 kg, and an Epg of 450 Joules, knowing the gravity is 9.8 m/s².
What we do next is clear is the Epg formula, to calculate the height, then
Epg = m × g × hh = (Epg)/(m × g)Now, we substitute the data in the cleared formula to calculate the height:
h = (Epg)/(m × g)
h = (450 J)/(15 kg × 9.8 m/s²)
h = (450 J)/(147 kg × m/s²)
h ≅ 3.06 m
So, the height of a shelf with an object that has a mass of 15 kg and Epg of 450 J, is 3.06 meters.
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What is the impulse that Earth exerts on it during the first 0.50m of its fall? The next 0.50 m ?
The impulse exerted by Earth on the apple during the first 0.50 m of its fall is 0.74 Ns, and during the next 0.50 m, it is 0.37 Ns.
Using the equation for impulse, which is impulse = force x time, we can calculate the impulse that Earth exerts on the apple during the first 0.50 m and the next 0.50 m of its fall.
First, we need to calculate the force of gravity acting on the apple, which is given by the equation F = mg, where m is the mass of the apple and g is the acceleration due to gravity (approximately 9.81 m/s^2).
The mass of the apple is 150 g, which is 0.15 kg. Therefore, the force of gravity acting on the apple is:
F = mg = (0.15 kg)(9.81 m/s^2) = 1.47 N
Now, we can calculate the impulse exerted by Earth on the apple during the first 0.50 m of its fall. Since the force of gravity is constant, we can use the equation impulse = force x distance, where distance is the distance over which the force is applied.
Impulse during first 0.50 m = force x distance = (1.47 N)(0.50 m) = 0.74 Ns
For the next 0.50 m of the apple's fall, we need to consider that the velocity of the apple is increasing, so the force of gravity is no longer constant. However, we can approximate the average force over this distance as half the force at the start of the fall, or 0.5(1.47 N) = 0.74 N.
Using the same equation impulse = force x distance, we can calculate the impulse exerted by Earth on the apple during the next 0.50 m of its fall:
Impulse during next 0.50 m = force x distance = (0.74 N)(0.50 m) = 0.37 Ns.
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As a beam of light enters a swimming pool, it will_____
1. bend
2.remain on a straight path
3. be absorbed
because light waves____when they pass from one medium to a different medium.
1. reflect
2.refract
3.diffract
Answer:
bend
refract
................
If a transverse wave passes from a flexible spring into a heavier stiffer spring where the wave has a greater speed, what will happen to the
reflected wave in the flexible spring?
When a transverse wave passes from a flexible spring into a heavier stiffer spring, the wave will have a greater speed in the stiffer spring due to the increased stiffness of the material. As a result, when the wave reaches the end of the stiffer spring, some of the energy from the wave will be reflected back towards the flexible spring.
The reflected wave in the flexible spring will be inverted, meaning that it will be flipped upside down. Additionally, the amplitude of the reflected wave will depend on the amount of energy that was transmitted into the stiffer spring.
If a large amount of energy was transmitted, then the reflected wave will have a higher amplitude. Conversely, if only a small amount of energy was transmitted, then the reflected wave will have a lower amplitude.
Overall, the reflected wave in the flexible spring will experience a change in both its orientation and amplitude due to the transmission and reflection of the initial wave in the stiffer spring.
When a transverse wave passes from a flexible spring into a heavier, stiffer spring where the wave has a greater speed, the reflected wave in the flexible spring will have a reduced amplitude and undergo a phase change of 180 degrees, resulting in an inverted waveform.
This occurs due to the impedance mismatch between the two springs, causing part of the wave energy to be reflected and part to be transmitted.
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Tobias has set a goal to reduce the number of errors on his timed typing tests by three each week. How can he track his progress on this goal?
Question 3 options:
plot the change in his WPM on a chart
purchase a fee-based typing program
track the hours he practices each week
edit each test document and write down the number of errors
Answer: D, Edit each test document and write down the number of errors
Explanation: I did the test and got 5/5 gl! :D
In a test of "g-suit," a volunteer is rotated in a horizontal circle of radius 7.0 m. What is the period of rotation at which the centripetal acceleration has a magnitude of (a) 3.0 g? (b) 10 g?
The rotational period during which the centripetal acceleration is 3.0 g is 4.35 s. The rotational period during which the centripetal acceleration is 10 g is 1.68 s.
What is the centripetal acceleration?centripetal acceleration is the rate at which a body moves through a circle. Because velocity is a vector number, it constantly changes while a body travels in a circle, which causes a change in velocity and an acceleration.
a = magnitude of the centripetal acceleration
r = radius of the circle
v = velocity
We can use the centripetal acceleration formula,
v = sqrt(ar)
(a) To find the period of rotation at which the centripetal acceleration has a magnitude of 3.0 g, we need to convert g into meters per second squared (m/s^2).
We know that 1 g = 9.8 m/s^2, so 3.0 g = 29.4 m/s^2.
we get,
v = sqrt(ar) = sqrt(29.4 x 7.0) = 20.3 m/s
The period of rotation,
T = 2πr / v
T = period of rotation.
T = 2π x 7.0 / 20.3 = 4.35 s
(b) To find the period of rotation at which the centripetal acceleration has a magnitude of 10 g,
We know that 1 g = 9.8 m/s^2, so 10 g = 98 m/s^2.
we get:
v = sqrt(ar) = sqrt(98 x 7.0) = 26.3 m/s
The period of rotation,
T = 2πr / v
T = period of rotation.
T = 2π x 7.0 / 26.3 = 1.68 s
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Write an essay on the meaning of life.
35 points cuz it's kinda hard
Answer:
The meaning of life is one of the most profound and enduring questions that has plagued humanity for centuries. Philosophers, scientists, and theologians have all attempted to answer this question in their own ways, yet it remains an enigma that has yet to be fully understood. At its core, the meaning of life is a subjective concept that is shaped by individual beliefs, experiences, and values. However, there are several common themes and ideas that have emerged from various attempts to answer this question. One of the most prominent views on the meaning of life is that it is to find purpose and fulfillment. This view suggests that we should strive to find something that gives our lives meaning, whether it be through our work, relationships, or personal pursuits. This idea is often associated with the concept of happiness, as many believe that true happiness can only be achieved by finding purpose and meaning in one's life. Another
A machine off efficiency 80% is used to lift a box. If the effort applied by the machine is
twice the weight of the box. Calculate the velocity ratio of the machine.
Therefore, the velocity ratio of the machine is 0.004.
What do you mean when you say a machine's effectiveness is 60?If the machine has a 60% efficiency, it can convert 60% of input labour into output. If we add 100 J of work to the machine as input and the machine's efficiency is 60%, we will only get 60 J of work as an output.
The machine's effectiveness is listed as 80%, or 0.8.
Efficiency = (Output work/Input work) x 100%
0.8 = (Output work/Input work) x 100%
Output work = (Effort x Distance moved by effort)
Output work = (2W x D)
Output work = 2WD
Input work = (Weight of the box x Distance moved by the box)
Input work = (W x D)
When we enter the output work and input work numbers into the efficiency equation, we obtain:
0.8 = (2WD / WD) x 100%
0.8 = 2 x Velocity ratio x 100%
Velocity ratio = 0.8 / (2 x 100%)
Velocity ratio = 0.004
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help please!!!
1 . A particle moves in a straight line with constant acceleration. The particle starts moving from rest. It takes the particle 2 seconds to travel 800 meters. Find the acceleration?
2. A golf ball accelerates off a tee at 15m/s2, changing its velocity from 10 m/s to 80m/s down the fairway. How long did it take the golf ball to accelerate?
3. A roller coasters accelerates from an initial velocity of of 40 m/s to a final velocity of 4.0 m/s over 4 seconds. What's the acceleration?
4. If the average speed of a car is 110 km/h, how long will it take the car to travel 715 km?
If a particle travels in a straight line while accelerating continuously. Starting at rest, the particle begins to move. The particle accelerates to a speed of 200 m/s² and travels 800 meters in 2 seconds.
The speed of a golf ball increases from 10 m/s to 80 m/s down the fairway as it accelerates off the tee at 15 m/s2. How much time did the golf ball need to accelerate?We can apply the formula: Initial velocity + acceleration over time equals velocity.
Here, initial velocity is equal to 10 m/s, final velocity is equal to 80 m/s, acceleration is equal to 15 m/s2, and we must determine the time.
Thus, 80 = 10 + 15 x time.
By solving for time, we obtain:
time = (80 - 10)/15, or 4 seconds.
A roller coaster accelerates throughout the course of 4 seconds from an initial speed of 40 m/s to a top speed of 4 m/s. How fast is it going?We can apply the formula: (Final velocity - Initial velocity) / Time = acceleration
Here, the initial speed is 40 m/s, the final speed is 4 m/s, and the time is 4 s.
Acceleration is therefore (4 - 40) / 4 = -9.0 m/s2. Remember that the roller coaster is decelerating, hence the acceleration is negative.
How long will it take a car travelling at an average speed of 110 km/h to cover 715 km?Time can be calculated using the formula: distance x speed.
Speed in this case is 110 km/h, and distance is 715 km.
Time therefore = 715 / (110/3600) = 28.7 hours.
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At time t = 0.00 s, a car is traveling along a straight line at a speed of 20 m/s with constant acceleration. The car travels 56.0 m during the time interval between t = 2.00 s and t = 4.00 s. What is the acceleration of the car?
Answer:
We can solve this problem using the following kinematic equation: d = vit + 1/2at^2 where d is the displacement, vi is the initial velocity, a is the acceleration, and t is the time interval. We are given that the car is traveling at a speed of 20 m/s at t=0.00 s, so the initial velocity is vi = 20 m/s. We are also given that the car travels 56.0 m during the time interval between t=2.00 s and t=4.00 s, so the displacement is d = 56.0 m and the time interval is t = 2.00 s - 0.00 s = 2.00 s. Plugging these values into the equation, we get: 56.0 m = (20 m/s)(2.00 s) +
Two identical rectangular strips of copper and the steel are pivoted to form bimetallic strips. If the
coefficient of linear expansivity of copper is more than that of steal, what will happen on
heating?
When the bimetallic strip is heated, the copper strip will expand more than the steel strip due to its higher coefficient of linear expansivity. As a result, the bimetallic strip will bend towards the steel strip.
This occurs because the copper strip, which is on the outer side of the bend, expands more than the steel strip, which is on the inner side of the bend. This phenomenon is known as the bimetallic effect and is commonly used in thermostats, thermometers, and other devices that require precise temperature control. By using different combinations of metals with varying coefficients of linear expansivity, the sensitivity and temperature range of the device can be adjusted to meet specific requirements. When the bimetallic strip is heated, the copper strip will expand more than the steel strip due to its higher coefficient of linear expansivity. As a result, the bimetallic strip will bend towards the steel strip.
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I need help this subject is kinda hard for me
An atom is considered neutral when it has an equal number of protons (positively charged) and electrons (negatively charged).
When an atom gains or loses electrons, it becomes an ion, which is an atom with an unequal number of protons and electrons, resulting in a net positive or negative charge.
If an atom gains electrons, it becomes an anion with a negative charge. If an atom loses electrons, it becomes a cation with a positive charge.
The magnitude of the negative or positive charge of an ion is equal to the number of electrons gained or lost, respectively.
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Astronauts collected a lunar rock with a mass of 73 grams. What was the
rock's weight when they brought it back to Earth? (1 point)
1. 0.715 N
2. 715 N
3. 0.118 N
4. 0.007 N
Answer: 0.715
Explanation: from grams to newtons
If sound waves travel along a guitar string at 220 m/s (based on the medium it is made of), what would be the wavelength of the ‘C’ note from Problem 2 in this guitar string?
To calculate the wavelength of the 'C' note from Problem 2 in this guitar string, we also need to know its frequency. Assuming you're referring to the 'C' note with a frequency of 261.63 Hz (C4), we need to use the formula,
Using the formula, wavelength = speed / frequency, we can calculate the wavelength as follows:
Wavelength = Speed of Sound / Frequency
wavelength = 220 m/s / 261.63 Hz
wavelength = 0.8415 meters.
wavelength = 84.15 cm.
Therefore, the wavelength of the 'C' note on this guitar string is approximately 0.8415 meters or 84.15 cm.
therefore the correct answer is : his guitar string is approximately 0.8415 meters or 84.15 cm.
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The terminal velocity of a 3 × 10−5 raindrop is about 9 m
/
s. Assuming a drag
force = −, determine (a) the value of the constant b and (b) the time required
for such a drop, starting from rest, to reach 63% of terminal velocity.
Answer:
The drag force on an object is given by the equation:
F_d = -bv^2
where F_d is the drag force, b is a constant that depends on the properties of the fluid and the shape of the object, and v is the velocity of the object.
We know that for a 3 × 10^(-5) raindrop, the terminal velocity is about 9 m/s. At terminal velocity, the drag force balances the weight of the raindrop, so we can write:
F_d = mg
where m is the mass of the raindrop and g is the acceleration due to gravity (9.8 m/s^2).
Using these equations, we can solve for the value of b:
mg = bv_t^2
b = mg/v_t^2
Plugging in the values given, we get:
b = (3 × 10^(-5) kg)(9.8 m/s^2)/(9 m/s)^2
b ≈ 3.14 × 10^(-5) kg/m
To find the time required for the raindrop to reach 63% of terminal velocity, we can use the following equation:
v(t) = v_t(1 - e^(-kt/m))
where v(t) is the velocity of the raindrop at time t, k is a constant related to b and the density of the fluid (air), and e is the base of the natural logarithm.
At 63% of terminal velocity, v(t) = 0.63v_t. Plugging this into the equation above and solving for t, we get:
t = -m/k * ln(1 - 0.63)
Plugging in the values of m, k, and b, we get:
t = -(3 × 10^(-5) kg)/(0.5 * 1.2 kg/m^3 * 3.14 × 10^(-5) kg/m) * ln(0.37)
t ≈ 0.068 s
Therefore, it would take approximately 0.068 seconds for the raindrop to reach 63% of its terminal velocity.
Because iron is more reactive than copper;it takes its place in a reaction with copper sulphate.What is the word equation?
Answer:
The word equation for the reaction between iron and copper sulfate can be written as:
Iron + Copper sulfate -> Iron sulfate + CopperThis is a displacement reaction, where the more reactive iron displaces the less reactive copper from the copper sulfate solution, forming iron sulfate and copper as products.
Explanation:
The balanced chemical equation for the reaction between iron and copper sulfate is:
Fe + CuSO4 → FeSO4 + CuThis equation shows that one atom of iron (Fe) reacts with one molecule of copper sulfate (CuSO4) to produce one molecule of iron sulfate (FeSO4) and one atom of copper (Cu). The equation is balanced, meaning that the same number of atoms of each element are present on both sides of the equation.
A sample of iron with a mass of 2.00 kg, initially at a temperature of 150.0°C, is in a well-insulated container. Water at a temperature of 20.0°C is added to the container, and the entire interior of the container is allowed to come to thermal equilibrium, where it reaches a final temperature of 61.0°C. What mass of water (in kg) was added? Assume any water turned to steam subsequently recondenses.
sample of iron with a mass of 2.00 kg, initially at a temperature of 150.0°C, is in a well-insulated container. Water at a temperature of 20.0°C is added to the container, and the entire interior of the container is allowed to come to thermal equilibrium, where it reaches a final temperature of 61.0°C then the mass of water added is 5.5 kg.
the principle of conservation of energy, which states that the total energy in a system remains constant.
Q = mCΔT
First, let's calculate the amount of heat transferred by the iron:
Q_iron = m_iron * C_iron * ΔT_iron
Q_iron = (2.00 kg) * (449 J/kg·°C) * (-89.0°C)
Q_iron = -80062 J
where C_iron is the specific heat capacity of iron and is equal to 449 J/kg·°C.
The negative sign indicates that heat is lost by the iron.
Next, let's calculate the amount of heat gained by the water:
Q_water = m_water * C_water * ΔT_water
Q_water = (m_water) * (4186 J/kg·°C) * (41.0°C)
Q_water = 173326 J
where C_water is the specific heat capacity of water and is equal to 4186 J/kg·°C.
The positive sign indicates that heat is gained by the water.
Since the container is well-insulated, the total heat transferred is equal to zero:
Q_iron + Q_water = 0
Substituting the values we get:
-80062 J + 173326 J = 0
Simplifying, we get:
93264 J = 0
assuming that the calculation was correct, we can find the mass of water added by using the equation:
m_water = Q_water / (C_water * ΔT_water)
Substituting the values, we get
m_water = (93264 J) / (4186 J/kg·°C * 41.0°C)
m_water = 5.5 kg
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Question 5 of 10
A pot of water is heated on a gas-flame stove and begins to boil. Which two
transfers of thermal energy involved in this system are examples of radiation?
A. From the burner to air that is not touching it
B. In the surrounding air as air currents develop
C. From the water to the air
D. From the burner to a nearby spoon
In this system, there are two thermal energy transfers that are instances of radiation: A. From the flame to air that isn't in contact with it D. From the hob to a spoon in the area
What kind of energy is transmitted to the water's particles when it is heated on a stove?Thermal energy can be seen in the boiling of water on a stove. As a substance's atoms and molecules vibrate more quickly as a result of a rise in temperature, thermal energy is created.
What is the process for transferring heat from the burner to the pot called?The most typical method of heat transfer is conduction, which involves the direct exchange of heat between two things. Burners on stoves, for instance, will transfer heat energy to the bottom of a pan that is resting on top of them when cooking. The pan then transfers the heat to its contents.
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As the frequency of a wave is increased, it's: (PICK TWO) A. Wavelength remains the same b. Velocity remains the same c. Velocity decreases d. Velocity increases e. Wavelength decreases f. Wavelength increases
As the frequency of a wave is increased, its wavelength decreases and its velocity remains the same.
What connection exists between a wave's wavelength and frequency?Wavelength and frequency are inversely proportional in a wave. This implies that a wave's wavelength reduces as its frequency rises and vice versa.
What is the significance of the velocity of a wave?The velocity of a wave represents how fast the disturbance is traveling through the medium. It is determined by the properties of the medium, such as its density and elasticity, and is independent of the wave's frequency and wavelength.
The velocity of a wave can be used to calculate other wave properties, such as its period and amplitude.
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The food calorie is equivalent to 4190 J . How many food calories does the cyclist burn if he rides over level ground at 7.3 m/s for 1.5 h ?
Answer:
To solve this problem, we need to use the formula: calories burned = (power expended in watts x time in seconds) / 4.184 First, we need to find the power expended in watts. We can use the formula: power = force x velocity Assuming the cyclist weighs 75 kg, the force required to maintain a speed of 7.3 m/s on level ground is: force = mass x acceleration force = 75 kg x 0 m/s^2 (since the cyclist is not accelerating) force = 0 N Therefore, the power expended by the cyclist is: power = force x velocity power = 0 N x 7.3 m/s power = 0 W Now we can plug in the values into the calories burned formula: calories burned = (power expended in watts x time in seconds) /
EARTH AND SPACE SCIENCE!
Scientist who ushered out old astronomy by constructing a model of the solar system with the Sun at its center and the planets moving around the Sun.
a.) Galileo Galilei
b.) Nicolaus Copernicus
c.) Tycho Brahe
d.) Sir Isaac Newton
The scientist name is b) Nicolaus Copernicus.
Nicolaus Copernicus was a Polish astronomer who is credited with ushering out old astronomy by constructing a model of the solar system with the Sun at its center and the planets moving around the Sun. He published his model, known as the heliocentric model, in 1543. This model eventually replaced the geocentric model, which placed the Earth at the center of the universe. Copernicus is also credited with making significant contributions in other areas of astronomy, including the motion of the moon and the motion of comets.This model replaced the Ptolemaic model, which had held that the Earth was the center of the universe, and ushered in a new era of astronomy.
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PLEASE HELP ASAP!!
A vector has an x-component of -309m and a y-component of 187m. Find the magnitude of the vector
Therefore, the magnitude of the vector is approximately 361.3 meters.
How big is the output vector of 2?The magnitude of either vector is the same as the magnitude of the outcome of two equal vectors. As a result, the components of V 1 in the X and Y coordinates are, respectively, -6.6 units and 0 units.
Using the Pythagorean equation, we can determine the magnitude of a vector with x and y components:
|v| = √(x² + y²)
where |v| denotes the vector's size.
The vector in this instance has a y-component of 187 m and an x-component of 309 m.
When we enter these numbers into the solution, we obtain:
|v| = √((-309)² + (187)²)
|v| = √(95658 + 34969)
|v| = √(130627)
|v| ≈ 361.3
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