Both Jill and Jan have the same mass, 41 kg. Jill walked up the stairs and Jan ran up the stairs. The height of the stairs is 15 meters. Who did more work?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

The two required components for a generator

Name the non metal condut electricity