Which of the following terms describes a machine that converts heat into work?

A. Entropy pump

B. Heat engine

C. Heat pump

D. Entropy engine

What would be the path of the moon if somehow all gravitational forces on it vanished to zero?

Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 18 rubs, at a distance of 7.

All of the outer planets are much larger than the inner planets true or false

If a space ship is traveling with a constant acceleration of 75 m/s^2 and travels for three weeks, how far did it travel and what was it's velocity before it stopped?

You have two solid steel spheres; sphere 2 has twice the radius of sphere 1. what is the ratio of the moments of inertia, i2 : i1?

Which parameter of the present universe, more than any other, is considered to be critical in determining the ultimate fate of the universe?

Which type of electromagnetic radiation can not be focused

When an object experiences centripetal acceleration, in which direction does it accelerate? A. Inward, toward the center of the circle B. In the direction it's moving C. Outward, away from the center of the circle D. Toward the ground

Consider a sphere and a cylinder of equal volume made of copper. Both the sphere and the cylinder are initially at the same temperature and are exposed to convection in the same environment. Which do you think will cool faster

How is potential energy converted to thermal energy in a system?