Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?

4%

25%

75%

400%

If you use a heavier bowling ball will the ball slow down or go faster down the lane.

What is true about all of these atoms? They cannot be solids. They are the largest units of matter. They are the only types of atoms that exist. They cannot be divided.

Determine the magnitude of the weight of a 3.0 kg object on earth. A) 3.0 N B) 29 N C) 3.3 N D) 0.31 N

Which is the best procedure to make a permanent magnet

What keeps the electrons from leaving an atom in the rutherford model of the atom? a. strong electrostatic attraction to the nucleus b. strong attraction to other electrons c. the repulsive forces between electrons d. an outer coating on the atom e.

What are those that you are wearing?

What Science is/is not and How Physics and Chemistry are Connected

What two properties of sound remain the same when sound quality differs? A. amplitude B. frequency C. intensity D. loudness E. pitch F. resonance

A 1650 kg car accelerates at a rate of 4.0 m/s^2. How much force is the car's engine producing?

What is an example of when momentum is not conserved?