A girl and boy are moving a wagon full of books across the floor at a constant speed. We know the girls pulling the wagon at an angle of 36.9°. She is pulling with a force of 50 N and a boy is pushing with a force of 30N.  The mass of the Wagon and books together is 90 KG. Determine the force of gravity acting on the circled object, the normal force acting on the circled object, and the force of friction.

After an atomic bomb has been dropped, the damage continues to get worse. why is this?

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.

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?