Answer:
Explanation:
<u>The Electric Potential</u>
The electric potential at a point is equal to the electric potential energy (measured in joules) of any charged particle at that location divided by the charge (measured in coulombs) of the particle.
To calculate the electric potential of a point charge Q at a distance r, we use the formula:
Where
We are given the following data:
r = 4.20 m
Calculating:
Answer:
The correct statements are A and E.
Explanation:
This statements will be explained according to the Newton's third law of motion. It states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction (law of action and reaction).
A. You are experiencing a larger acceleration than your friend, but in the opposite direction. True. The forces are equal, but the mass of each individual is different, so the acceleration has to be different too. In this case, the smaller mass (you) has the large acceleration.
B. You are experiencing the same acceleration as your friend, but in the opposite direction. False. The forces are equal but the accelerations are different.
C. You are experiencing a smaller acceleration than your friend, but in the opposite direction. False. You are experiencing a larger acceleration due to the smaller mass.
D. You are experiencing a smaller force than your friend, but in the opposite direction. False. The forces are equal for both masses.
E. You are experiencing the same amount of force as your friend, but in the opposite direction. True.This is what the law states.
F. You are experiencing a larger force than your friend, but in the opposite direction. False. The forces are equal.
Electrostatic energy
hope this helped!
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Answer:
acceleration a = 1.04 m/s2
Explanation:
Assume the train has a speed of 23m/s when the last car passes the railway workers. Once this happens the last car would have traveled a total distance of the 180m distance between the railway worker standing 180 m from where the front of the train started plus the 75m distance from the first car to the last car:
s = 75 + 180 = 255 m
We can use the following equation of motion to find out the distance traveled by the car:
where v = 23 m/s is the velocity of the car when it passes the worker, = 0m/s is the initial velocity of the car when it starts, a m/s2 is the acceleration, which we are looking for.