A trunk is dragged 3 m across an attic floor by a force of 2 N. The work done on the trunk is joules. Assuming the floor to be level, the gain in potential energy is joules.

How many neutrons does C-13 have? A. 6 B. 7 C. 13 D. 19

What did J. J. Thomson observe when he applied electric voltage to a cathode ray tube in his famous experiment? A. The stream of cathode ray particles was moving very slowly. B. The glass opposite of the negative electrode started to glow. C.

In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer. How did she change the circuit? a. She changed a short circuit to an open circuit. b. She changed an open circuit to a closed circuit. c.

If a spring has a spring constant of 2 N/m and it is stretched 5 cm, what is the force of the spring?

Choose all the answers that apply. According to Newton's second law of motion: objects at rest will remain at rest unless acted upon by an outside force mass has an inverse relationship with acceleration the greater the magnitude of force, the

Which of the following describes the flow of charges through a wire or a conductor?

What is the kinetic energy of a 2 kg snowball thrown through the air at 5 m/s?

A 5.00*105-kg subway train is brought to a stop from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. what is the force constant k of the spring

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?