Hailey was riding her bike at a velocity of 4 m/s to the north. Her velocity changed to 6 m/s to the north. What was her change in velocity?
A. -2 m/s north
B. 6 m/s north
C. 4 m/s north
D. 2 m/s north

The momentum of an isolated system is conserved a) only in inelastic collisions. b) only in elastic collisions. c) in both elastic and inelastic collisions

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

Current from a charged capacitor lights a bulb. as time goes on the brightness of the