NIQUEFROMDALLAS

This is the exact problem from the paper and I got an answer of 4.2 * 10^7 and I was wondering if this was the right answer. What is the height above the earth's surface at which all synchronous satellites (regardless of mass) must be placed in orbit? The...

I have no idea on how to do either part of these questions please help (part 1 of 2) To move a refrigerator of mass 110 kg into a house, a mover puts it on a dolly and covers the steps leading into the house with a wooden plank acting as a ramp. The plank...

I worked it from the center of the Earth so i have to go back and subtract the radius of the Earth from that answer.