Mo = 6.000 x 1024 kg Mc= 7.348 x 1022 kg
Re,(= 3.924 x 108 m
The Moon takes approximately 28.2 days to orbit the earth.
A. Given the radius of that orbit, determine the average velocity
necessary to complete that orbit.

To solve this problem it is necessary to apply the kinematic equations of movement description, where the speed of a body is defined as the distance traveled in a given time, that is to say

where,

x = Displacement

t = time

Since the moon is making a path equal to that of a circle, we know by geometry that the perimeter of a circle is given by

At the same time we have that time is equal to

Using the equation for velocity we have finally that

Therefore the speed of the Moon in its orbit is 987.92m/s

c.the charges if the proton and electron and gravity

e/c, where e is its total energy