When ice changes from solid to liquid, energy is required. Where does it come from?

For which job would a noise canceling device be the most beneficial? a doctor detecting diseases a veterinarian studying injuries in animals a food scientist testing the preservation of food a carpenter using saws and cutting tools

A stack of books rests on a level frictionless surface. A force F acts on the stack, and it accelerates at 3.0 m/s2. A 1.0 kg book is then added to the stack. The same force is applied, and now the stack accelerates at 2.0 m/s2.

You drop two balls from a tower, one of mass m and the other of mass 3m. Just before they hit the ground, which ball, if either, has the larger kinetic energy? a. second b. first c. both balls have the same kinetic energy

What is one kg mass.

Which types of electromagnetic wave travels through space the fastest?

Charlotte, a 60.0-kg skin diver, shoots a 2.0-kg spear with a speed of 15 m/s at a fish who darts quickly away without getting hit.

All objects are attracted to each other by the force of a. weight. b. mass. c. inertia. d. gravity.

landslides and mudslides caused by lava flows are ___ deadly than the lava flow itself. a. more b. less

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor