If the Eyepiece magnification is X10 and the objective lens magnification is X4 with the distance across the picture of an onion cell 32.0mm Find a) overall magnification of microscope

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