Which statement best compares the momentum of a stationary truck and a car in motion? a. the moving car has less momentum than the stationary truck. b. the moving car and the stationary truck have the same momentum. c. the moving car has some momentum, but the stationary truck has none. d. the stationary truck has momentum, but it is less than that of the moving car.

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

How can you increase the strength of an electromagnet?

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?