You are walking toward the back of a train that is moving forward with a constant velocity. The train's velocity relative to the
1 answer:
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Simply, apply the formula 
and insert the values of m = mass, v = velocity and E = Energy.
The result will be
, m = 1 kg
The result will be
Answer:
On the magnitude of the charges, on their separation and on the sign of the charges
Explanation:
The magnitude of the electric force between two charges is given by
where
k is the Coulomb's constant
q1, q2 are the magnitudes of the two charges
r is the separation between the charges
From the formula, we see that the magnitude of the force depends on the following factors:
- magnitude of the two charges
- separation between the charges
Moreover, the direction of the force depends on the sign of the two charges. In fact:
- if the two charges have same sign, the force is repulsive
- if the two charges have opposite signs, the force is attractive