Author Question: A moon of mass 4.00 1015 kg is in a circular orbit of radius 1.00 105 km about a planet of mass ... (Read 143 times)

maychende · **on:** Jul 29, 2018

A moon of mass 4.00 1015 kg is in a circular orbit of radius 1.00 105 km about a planet of mass 6.00 1020 kg. Determine the potential energy of the system.

A)

1.60 1010 J
B)

2.40 1031 J
C)

-1.60 1010 J
D)

-6.67 105 J
E)

-1.60 1018 J

Question 2

A charge Q is uniformly distributed throughout a nonconducting sphere of radius R.

(a) What is the magnitude of the electric field at a distance R/2 from the center of the sphere? (b) What is the magnitude of the electric field at a distance 2R from the center of the sphere?