Calculate the period of a satellite orbiting the moon, 94 km above the moon's surface. ignore effects of the earth. the radius of the moon is 1740 km.

First we calculate the effective radius R:

R = 1740+94 = 1834 km = 1.834E6 m 

Then taking the mass of the moon:
M = mass of moon = 7.348E22 kg 

We then calculate the period using the formula:

T = 2π√[R³/(GM)] = 7049.3 sec = 1.96 hr

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

a and b sometimes have a positive value