Physics Answers

How far apart are the centers of two objects with masses of 4100 kg and 6500 kg. The graviational attraction between them is 86 N.

What is the force exerted Big Ben on the Empire State building? Assume that Big Ben has a mass of 10^8 kg and the Empire State building 10^9 kg. The distance between them is about 5000 kg and Big Ben is due east of the Empire State building.

How will you explain the relationship of gravity and potential energy when an object is thrown downward?

How do forces acting on a body affect its stability?

A boy throws a stone straight upward with an initial velocity of 5 m/s from the surface of the Earth. What is the maximum height above the starting point will the stone reach before it starts falling back?

A boy throws a stone straight upward with an initial velocity of 5 m/s from the surface of the Earth. What is the maximum height above the starting point will the stone reach before it starts falling back?

If a dropped object falls 19.6 m in 2.0 s, how far will it fall in 4.0s?

A supersonic bomber which had a momentum of 8,800,000 kg-m/s east, comes to a halt on the ground. What impulse is applied?

A BMCC student is doing an experiment using a string with two fixed ends. If the string length L is 1.0 m, what is the longest possible wavelength of the standing wave on this string in m?

You place a floating buoy on an ocean surface. The buoy stays at the same location but is free to move vertically with the ocean surface. An ocean wave of speed 4.2 m/s and a wavelength of 5.6 m. How many times per second does the buoy oscillate ups and downs? The answer is a number and may not be an integer value.