What number equal 20

A 25kg object is 3.0 meters up. How much potential energy does it have

What causes the global convection currents between the equator and the poles?

Use Einstein's energy equation to solve the following problem. Recall that the speed of light is 3 x 108 m/s. If a 5.0-kg stone is completely converted to energy, what is its energy equivalent in joules?

Is the SI unit of work newton?

How does sound wave travel through a medium

You are given two objects of identical size, one made of aluminum and the other of lead. You hang each object separately from a spring balance. Because lead is denser than aluminum, the lead object weighs more.

Why are the oldest parts of the ocean floor no older than about 200 million years

A firefighter with a weight of 707 N slides down a vertical pole with an acceleration of 2.79 m/s2, directed downward. (a) What is the magnitude of the vertical force on the firefighter from the pole?

As latitudes increase temperatures gennerally decrease. explain?

Matter that does not conduct energy easily