Answer:

Explanation:
The electrostatic potential energy is given by the following formula

Now, we will apply this formula to both cases:

So, the change in the potential energy is

Answer:
The angle of reflection is the angle the reflected rays make with a perpendicular line to the reflecting surface.
Explanation:
Reflection It is the change of direction suffered by a luminous ray when hitting the surface of an object. The angle of reflection is that which is formed by the reflected ray and the normal vector to the study surface
Answer:
<em>585lb</em>
Explanation:
Given the formula for calculating the magnitude of the resultant force as;

<em>Given </em>
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<em>Hence the magnitude of the resultant force is 585lb</em>