A book with a mass of 1.2 kg sits on a bookshelf. If it has a gravitational

potential energy of 50 J, how high is the shelf? The acceleration of gravity is

9.8 m/s2

A. 1.2 m

B. 4.3 m

C. 5.9

D. 2.7 m

Which subatomic particles are in the nucleus of an atom? Question 17 options: electrons only protons and neutrons

How can you conclude about how forces add?

What type of wave is sound

To make and sell fireplaces, Hearth, Inc., buys igniters, tubing, and other parts from Inflame Parts and installs them without modification. If the parts are defective, strictly liable for any damage caused by the defects.

What is the relationship between potential energy and kinetic energy?

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?