10. [0/12.5 Points] DETAILS PREVIOUS ANSWERS In one cycle a heat engine does 100 ) of work while it expunges 56 ) of heat to a cold reservoir. What is the efficiency of this heat engine? 64.1% isn't right​

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?