A piston-cylinder device contains 1 m3 of air at 100 kPa, and 300 K. The air is now compressed to one tenth of the original volume in an adiabatic and frictionless manner. Using the PG model, determine the boundary work transfer during the process.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.