Which substance is used to remove rust from metal?

A: lye (NaOH)

B: hydrochloric acid (HCl)

C: ammonia (NH3)

D: sulfuric acid (H2SO4)

Potential energy in an electrical system is stored?

What factors affect the strength of the electric force between two objects

Identify two potential improvements to the opal extraction process and explain how these improvements could minimize harm to the environment.

A Cadiallac Escalade has a mass of 2569.6 kg, if it accelerates at 4.65 m/s^2 what is the net force of the car?

Which of the following simple machines is not properly identified? A. Scissors: lever B. Pizza cutter: wedge C. Screw: wheel and axle D. Ramp: inclined plane

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called

A book falls of the table and hits the floor. Is work done? Why?

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J

What two equations can be used to determine the speed of a wave