Does aluminum foil refract light? Why?

An upward force of 18 N is applied via a string to lift a ball with a mass of 1.5 kg. a) what is the net force acting upon the ball? b) what is the acceleration of the ball?

A box is pulled with a horizontal force of 500N and moves 5m. What is the work done?

A roller-skate with a mass of 10kg has a force of 12N exerted on it. At what rate did the skate accelerate?

Which best explains why the pencil seems bent? A. It travels at the same speed in all matter. B. It travels faster in air than in water. C. It travels at different speeds in water and in glass. D. It travels slower in air than in glass.

What is the acceleration of 0.3kg ball hit with force of 20N?

ll of mass m is thrown vertically upward with an initial speed of v0. It experiences a force of air resistance given by F = - kv, where k is a positive constant. The positive direction for all vector quantities is upward.

When combing your hair, you scuff electrons from your hair onto the comb. is your hair then positively or negatively charged? how about the comb?

A 4 kg mass is in free fall. What is the velocity of the mass after 11 seconds

Pascal's principle explains the viscosity of motor oil used in cars. True or False?

A (n) ... is a material that takes in a wave when the wave hits it