How many Brainliest can you give out in the long run? If somebody gives me a serious answer I can provide them with a Brainliest of their own

What is the mass of the same rock on the earth

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.

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?