a 3.55-g bullet embeds itself in a 1.67-kg block, which is attached to a spring of force constant 795 n/m..

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

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.

Explain why electric current cannot exist if a current doesn't have a voltage source.