Why is it impossible to build a machine that produces more energy than it uses?

Which sentence about particles in matter is true? A. Atoms are present in solids and liquids but not in gases. B. The particles of matter are in constant motion. C. The same kinds of atoms are found in different elements. D.

Which parts of an electric generator are connected

How many coulombs of charge do 50 * 10^31 electrons possess

Assume that a certain location on the Earth reflects 28.0% of the incident sunlight from its clouds and surface.

A car travels forward with constant velocity. It goes over a small stone, which gets stuck in the groove of a tire.

A syrup added to an empty container with a mass of 115.25g. When 0.100 pint of syrup is added, the total mass of the container and syrup is 182.48g. Determine the density ... ?

MOST high schools teach biology, then chemistry, then physics. What do you see as some of the disadvantages of the traditional sequence to both students and teachers.

If you break a bar magnet in half, each half

If a forklift raises a 76-kg load a distance of 2.5 m, about how much work has it done?

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...