Questions from College Physics

Q: During a balloon ascension, wearing an oxygen mask, you measure

During a balloon ascension, wearing an oxygen mask, you measure the weight of a 5.00 kg object and find that the value of the gravitational field strength at your location is 9.792 N/kg. How high abov...

Q: How far above the surface of Earth does an object have to

How far above the surface of Earth does an object have to be in order for it to have the same weight as it would have on the surface of the Moon? (Ignore any effects from Earth's gravity for the objec...

Q: An astronaut stands at a position on the Moon such that Earth

An astronaut stands at a position on the Moon such that Earth is directly overhead and releases a Moon rock that was in her hand. (a) Which way will it fall? (b) What is the gravitational force exerte...

Q: (a) What is the magnitude of the gravitational force that

(a) What is the magnitude of the gravitational force that Earth exerts on the Moon? (b) What is the magnitude of the gravitational force that the Moon exerts on Earth? See Appendix B for necessary inf...

Q: Find the ratio of Earth's gravitational force on a satellite when it

Find the ratio of Earth's gravitational force on a satellite when it is on the ground to the gravitational force exerted when the satellite is orbiting at an altitude of 320 km.

Q: Using the masses and mean distances found in Appendix B, calculate

Using the masses and mean distances found in Appendix B, calculate the net gravitational force on the Moon (a) during a lunar eclipse (Earth between Moon and Sun) and (b) during a solar eclipse (Moon...

Q: A binary star system consists of two stars of masses M1 and

A binary star system consists of two stars of masses M1 and 4.0M1 a distance d apart. Is there any point where the net gravitational field due to the two stars is zero? If so, where is that point?

Q: A box sits on a horizontal wooden ramp. The coefficient of

A box sits on a horizontal wooden ramp. The coefficient of static friction between the box and the ramp is 0.30. You grab one end of the ramp and slowly lift it up, keeping the other end of the ramp o...

Q: A book that weighs 10 N is at rest in six different

A book that weighs 10 N is at rest in six different situations. Blue arrows indicate forces exerted on the book by an object that is not shown. Rank the situations according to the magnitude of the no...

Q: A box full of books rests on a wooden floor. The

A box full of books rests on a wooden floor. The normal force the floor exerts on the box is 250 N. (a) You push horizontally on the box with a force of 120 N, but it refuses to budge. What can you sa...