A perpetual motion machine can never be built because it is not possible to eliminate

A) Momentum

B) Inertia

C) Elasticity

D) Friction

In any one material, all electromagnetic waves have the same a. wavelength. b. velocity. c. frequency. d. amplitude.

When light rays reflect off a rough surface, they ... ?

Explain which of the following has more inertia and why: a 200 lb wrestler sitting on a mat or a baseball flying through the air at 55 mi/hr.

Why do trains use steel wheels rather than rubber tires? A) Steel wheels provide more grip, making it easier to stop a train. B) Rubber tires don't provide enough friction to allow the train to move.

What kinds of forces hold ionic solids together? Check all that apply. Check all that apply. dispersion forces metallic bonds covalent bonds electrostatic attraction dipole-dipole forces hydrogen bonds

1.) State which definition of power below is correct. A.) the energy transferred per hour. B.) the energy transferred. C.) the energy transferred per second. D.) the force over a distance. 2.

Science and technology are closely related, but not the same. Which of the following is most likely a result of technology, not science?

Ashlee pours some quantity of orange juice in a glass. She accidentally breaks the glass and juice spills all over the floor. Which characteristic of the juice will change? A. mass B. State C. Shape D. Volume

A car travels along a straight road at a steady 40 MPH. Are the forces on the car balanced or unbalanced? Explain.

Why doesn't a ball roll forever after being kicked at a soccer game!