In the Rutherford experiment, an alpha particle (mass m) with initial momentum pi sometimes hit a gold nucleus (mass M) with zero impact parameter (head on). What would be the approximate final momenta of the alpha particle (pa) and of the gold nucleus (pAu), in terms of the the initial alpha particle momentum pi?

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.

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.