A go-kart is travelling at a constant speed of 13.8 meters per second around a horizontal circular track with a radius of 42.0 meters. The combined mass of the go-kart and the
driver is 143 kilograms. What is the magnitude of the centripetal force acting on this
Combined mass?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final