3 years ago

What happens when two charged objects physically contact each other?

1 answer:

6 0

If a negative object is used to charge a neutral object, then both objects become charged negatively if this answer is wrong I'm sorry.

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satela [25.4K]

The work done by the friction force to stop the player is equal to his loss of kinetic energy:
$W= \Delta K$

The work done by the friction force is the magnitude of the force $\mu m g$ times the distance covered by the player, d:
$W= \mu mg d$

The loss in kinetic energy is simply equal to the initial kinetic energy of the player, since the final kinetic energy is zero (the player comes to rest):
$\Delta K=K_i = \frac{1}{2}mv^2$

Substituting into the first equation, we get:
$\mu m g d= \frac{1}{2}mv^2$
from which we find d, the distance covered by the player:
$d= \frac{v^2}{2 \mu g}= \frac{(4.0 m/s)^2}{2 \cdot 0.4 \cdot 9.81 m/s^2}=2.04 m$

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Your answer is 7.009m/s

If you would like to show how I solved this just ask. :)

Hope this helps -John

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3 years ago

Write a story that includes (in order) the 7 waves of the electromagnetic spectrum. Try incorporating a characteristic about eac

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