Two identical satellites are placed in orbit around Earth. Satellite A is a distance R from the Earth while Satellite B is a distance 1/2 R from Earth. If
the gravitational force on Satellite A is F, what is the gravitational force
acting on B?
Please help

What is the measure of a change in an objects velocity?

Which situation will produce the greatest change of momentum

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_