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How much is the current in a light bulb whose resistance is 350 ohms when the bulb is connected to a 110-volt outlet?
Answer:
0.31429 Amps
Explanation:
Using the "Ohm's Law" we can look for the current (amps) with a formula of I = V/R
Given:
Resistance (Ohm) = 350
Volts = 110
Solution:
I = 110v/350r
I = 0.31429 amps
Which two changes would decrease the gravitational force between two
objects?
A. Decrease the distance between the objects.
B. Increase the mass of one of the objects.
O c. Decrease the mass of one of the objects.
D. Increase the mass of both objects.
E. Increase the distance between the objects.
Answer:
C. Decrease the mass of one of the objects.
E. Increase the distance between the objects.
Explanation:
The gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects.
What are the factors affecting gravitational force?The factors affecting gravitational force are the masses of the objects and the distance separating the objects.The gravitational force increases with increase in mass and decreases with increase in distance of separation and vice versa.Therefore, the gravitational force will decrease when we increase the distance between the objects and decrease the mass of both objects and the gravitational force will increase when we decrease the distance between the objects and increase the mass of both objects.The masses can be taken between two objects and named as m1 and m2.Learn more about gravitational force,
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Suppose you are an engineer, and you are asked to measure the force on a supporting beam of a bridge. You measure it to be 50,067 lbs, but you know that your scale is only precise to ±400 lbs. How do you record this measurement in your final report to the client? (Keep in mind that you want to find the perfect way to express the number to give an idea of how precise it is.) Click the above link to submit a three sentence description, which includes: (5 pts) How you would record the measurement in the final report. (5 pts) Why you would record it that way.
Answer:
F = (500 ± 4) 10² lb
Explanation:
This is an exercise in the uncertainty or error of a measurement.
If a single measurement is made, the way to give the result is the measurement value plus the appreciation of the instrument that corresponds to the absolute error, in the form
F = x ± Δx
For this, a suitable uniform is the use of scientific notation, where each magnitude is written with an integer and some decimals multiplied by an exponential.
X = 50067 lb = 5.0067 10⁴ lb
the uncertainty is
Δx = 400 lb = 4.00 10² lb
so the result for the report must be written
F = (500 ± 4) 10² lb
where the significant figures are adjusted to the measurement error.
In the case of making a series of measurements, the value obtained is the average of the measurements and the error must be given by the standard deviation
A rock was dropped from a bridge over a river
If the rock was released when it was 11.2 m above the water and it took 0.550 s to reach the water, what its velocity when it was released?
Need HELP ASAP PLEASE THANK YOU TO ANYBODY THAT HELPS!!!!!!!!!!!!!!
Answer:
the slop is y x ray down
Explanation:
To determine
the force of an object what two measurements
are multiplied?
Answer:
Mass and acceleration
what is the mass of an object that has 324 j of energy and is moving at a speed of 9 m/s
Answer:
324 in ===
Explanation:
Answer:
36 kg
Explanation:
m= ?
KE= 324 J
v= 9 m/s
m= 324 / 9
m= 36 kg
A runner is jogging in a straight line at a steady Vr= 3.4km/hr. When the runner is L=8km from the finish line, a bird begins flying straight from the runner to the finish line at Vb= 17km/hr(5 times as fast as the runner). When the bird reaches the finish line, it turns around and flies directly back to the runner. What cumulative distance does the bird travel?
Answer:
The cumulative distance that the bird travel is 13.33 Km
Explanation:
Given that,
Velocity of runner = 3.4 km/hr
Distance = 8 km
Velocity of bird = 17 km/hr
Let x is the distance from the origin where the runner run into the bird
We need to calculate the value of x
Using time of runner and bird
[tex]t_{r}=t_{b}[/tex]
[tex]\dfrac{d_{r}}{v_{r}}=\dfrac{d_{b}}{v_{b}}[/tex]
Put the value into the formula
[tex]\dfrac{x}{3.4}=\dfrac{8+(8-x)}{17}[/tex]
[tex]17x=3.4\times8+3.4(8-x)[/tex]
[tex]17x=27.2+27.2-3.4x[/tex]
[tex]17x+3.4x=54.4[/tex]
[tex]x=\dfrac{54.4}{20.4}[/tex]
[tex]x=2.67[/tex]
We need to calculate the cumulative distance that the bird travel
Using distance of bird
[tex]d_{b}=16-x[/tex]
Put the value into the formula
[tex]d_{b}=16-2.67[/tex]
[tex]d_{b}=13.33\ km[/tex]
Hence, The cumulative distance that the bird travel is 13.33 Km
describe an example of newton’s 3rd law of motion
Answer:
For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices.
Explanation:
This is the object of love in philosophy.
a. wisdom b. learning c. intelligence d. human person
Answer:
a
Explanation:
The U.S. uses a household voltage of 110 V. However electric stoves and dryers are wired with 220 V outlet, or a German made 220 V rated curling iron into a 110 V outlet? explain
HELP WKDUXHWOSUSG PLSSSS
Hi!
givens: initial velocity = 0 m/s
time = 8.5 s
acceleration = 10 m/s^2
Unknown: displacement, velocity final
Equation:
Displacement = 1/2 (at^2) + viT
SS:
Displacement = 1/2 (10 * 8.5^2) + 0
Displacement = 361.25 m in a positive direction.
My math might be a little off, but I'm not sure...
But yeah! Hope this helped :)
3. On Earth, what is the weight of a large-screen TV that has a mass of 75
kg? W (force) = m X gravity on earth
1 point
735 kg
735 Newtons
735 grams
9.8 m/sec 2
Answer:
735 N
Explanation:
Mass * gravity 75KG * 9.8 m/s^2 = 735 Newtons
On earth, the weight of a large screen TV with a mass of 75 kg would be 735 Newtons.
Weight is a kind of force.
Recall Newton's law of motion that says: F = ma, where F = force, m = mass, and a = acceleration due to gravity
In this case, m = 75 kg and a = 9.8 m/s2
Therefore,
f = 75 x 9.8
= 735 Newtons
More on calculating weight can be found here: https://brainly.com/question/23245710
Which two phrases describe a situation that will cause a stationary object to
start moving?
A. A net force equal to 0
B. A net force greater than 0
C. Unbalanced forces
D. Balanced forces
(two phrases)
Answer:
A net force greater than 0 is the answer
Explanation:
trust
Answer:
b c
Explanation:
Coach Wilkins drops a football from the top of the home bleachers at Tiger Stadium. If the stadium is 17.5 meters tall, how long did it take the ball to fall?
Answer:
it took 70.6 meters for the ball to fall
What is potential energy? Give at least three examples, and explain why they have potential energy.
Answer:
Energy stored in an object due to its position is Potential Energy. · Energy that a moving object has due to its motion is Kinetic Energy.
Explanation:
Answer:
To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position.
Holding a bow and arrow before shooting, The amount of energy stored before you race on track, And a roller coaster going to it's highest point staying there waiting to come down.
A hayride wagon is going down a spooky country road at 15 m/s when a Scarecrow appears in the roadway. The man at the wheel of the tractor takes 2.5 seconds to react and applies the breaks at a -1.65 m/s/s coming to a stop. How far did the hayride move before coming to a stop?
Answer:
d = 68.18 m
Explanation:
Given that,
Initial velocity, u = 15 m/s
Finally it comes to stop, v = 0
Acceleration, a = -1.65 m/s²
Time, t = 2.5 s
We need to find the distance covered by the hayride before coming to a stop. Let d is the distance covered. Using third equation of motion to find it :
[tex]v^2-u^2=2ad\\\\d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{-(15)^2}{2\times -1.65}\\\\d=68.18\ m[/tex]
So, the hayride will cover a distance of 68.18 m.
what refers to how large or strong is the force?
A. magnitude
B. line of action
C. velocity of the object
D. direction of the force
Explanation:
Option A= magnitude
Which of the following is the correct SI unit to use to measure a length of rope?
A
Yards
B
Feet
C
Meters
D
Inches
Answer:
D
Explanation:
Answer:
its d inches
Explanation:
Problem #1- In the first scene in which Miss Clark appears, she is supposed to be wearing a BLACK dress.
The only available dress that will fit the student playing this role is RED. There is no money in the budget to
purchase another dress. What can be done to the lighting on the stage to make the RED dress APPEAR
BLACK?
Answer:
Blue Lighting
Explanation:
In order to make red look black, you must use blue light. The blue would be absorbed and there would be no red light to reflect.
Answer:
You would have to shine green Light on the actress to make the dress appear to be red.
Explanation:
The reason it would appear to be red is because green reflects the red colour and absorbs the rest. So, when green light is shone on the dress, it absorbs all of the green light and not reflecting anything.The dress then appears to beblack.
parts of the breathing system
Answer:
it is a branch of tissue and organs . More it includes airways lungs and blood cells The muscles that power our lungs are also part of respiratory system .These parts work together to inhale oxygen and clean out waste materials(carbon dioxide) from our body .
In a circuit, a variable resistor is to be connected across a potential difference of 60 volts to allow the current to be adjusted in the range from 40 milliamperes to 100 milliamperes.
A variable resistor is a device in which the resistance can be varied.
mA = milliamperes, or 10-3 amperes
Over what range must the resistance vary?
plz help :')
Answer:
600 and 1500 [ohm
Explanation:
To solve this problem we must use ohm's law, which tells us that the voltage is the product of the current by the resistance, so we have:
V = I*R
where:
V = voltage [V]
I = current [amp]
R = resistance [ohm]
Therefore:
R = V/I
R1 = 60/(40*10^-3) = 1500 [ohm]
R2 = 60/(100*10^-3) = 600 [ohm]
So the resistance should be among 600 and 1500 [ohm]
An old man standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 14 m/s. The cliff is 63.5 m above the water's surface.
a. How long does it take the stone to fall to the water?
b. With what speed does the stone strike the water?
Answer:
a) t=3.6 sec
b) [tex]\mid v \mid =38\ m/s[/tex]
Explanation:
Horizontal Motion
When an object is thrown horizontally with a speed v from a height h, it describes a curved trajectory ruled by a constant speed in the horizontal direction and a variable speed in the vertical direction, where the acceleration of gravity makes the object fall to the ground.
If we know the height h from which the object was launched, the time it takes to hit the ground is:
[tex]\displaystyle t=\sqrt{\frac {2h}{g}}[/tex]
The horizontal speed is always constant:
vx=vo
But the vertical speed depends on the time and acceleration of gravity:
[tex]vy=g\cdot t[/tex]
The magnitude of the velocity or final speed of the object is given by:
[tex]\mid v \mid =\sqrt{vx^2+vy^2}[/tex]
a.
The stone was kicked over the cliff with a speed of v0=14 m/s, and the height it was thrown from is h=63.5 m, thus:
[tex]\displaystyle t=\sqrt{\frac {2\cdot 63.5}{9.8}}[/tex]
t=3.6 sec
b.
The vertical speed is:
[tex]vy=9.8\cdot 3.6[/tex]
vy=35.3 m/s
The final speed is calculated below:
[tex]\mid v \mid =\sqrt{14^2+35.3^2}[/tex]
[tex]\mid v \mid =\sqrt{1,442.09}[/tex]
[tex]\boxed{\mathbf{\mid v \mid =38\ m/s}}[/tex]
A ball is dropped from an upper floor, some unknown distance above Tom's apartment. As he looks out of his window, which is 1.10 m tall, Tom observes that it takes the ball 0.190 s to traverse the length of the window. Determine how high ℎ above the top of Tom's window the ball was dropped. Ignore the effects of air resistance.
Answer:
The height is 1.20 m above the window.
Explanation:
Given that,
Height of window = 1.10 m
Time = 0.190 sec
We need to calculate the velocity
Using equation of motion
[tex]s=ut+\dfrac{1}{2}gt^2[/tex]
Put the value into the formula
[tex]1.10=u\times0.190+\dfrac{1}{2}\times9.8\times(0.190)^2[/tex]
[tex]1.10=u\times0.190+0.17689[/tex]
[tex]u=\dfrac{1.10-0.17689}{0.190}[/tex]
[tex]u=4.85\ m/s[/tex]
We need to calculate the height
Using equation of motion
[tex]v^2=u^2+2gh[/tex]
Put the value into the formula
[tex](4.85)^2=0+2\times9.8\times h[/tex]
[tex]h=\dfrac{(4.85)^2}{2\times9.8}[/tex]
[tex]h=1.20\ m[/tex]
Hence, The height is 1.20 m above the window.
Convert 4 µL to mL
Please help meeeee
Answer:
0.004
Explanation:
1 micrometer= .001 milimeter
so 4 Micrometers= .004 milimeters
You are riding a bicycle. If you apply a forward force of 125 N, and you and your bicycle have a mass of 86 kg, what will be the forward acceleration of the bicycle?
A.) 1.67 m/s²
B.)1.52 m/s²
C.) 3.37 m/s²
D.) 0.66 m/s²
Answer: B 1.52 m/s hope this helps
Explanation: I just took the test
1. What is the average speed of a racecar that travels a distance of 230 miles in 2 hours?
Answer:
s = d/t
s = 230/2
s = 115 mph
Explanation:
Average Speed (s) = Distance travelled (d) / Time elapsed (t)
what quantity can be obtained from the slope of a position time graph
Answer:
The slope of position-time graph is the velocity of the object understudy
According to the Mayflower compact, to unite, the colonist were required to forfeit some ———- "for the general good of the colony"
Personal right
Personal property
Religious beliefs
Personal income
What term refers to producing magnetism by placing a body within a magnetic field?
A. Polarization
B. Natural magnetism
C. Artificial magnetism
D. Induced magnetism
Answer:
Induced magnetism
Explanation:
Answer:
induced magnetism
Explanation:
Placing a piece of metal such as an iron bar into a magnetic field, thereby causing the bar to become magnetized, is known as induced magnetism. Typically, an object that has been magnetized in this manner will lose its magnetic properties quickly when removed from the magnetic field.