A heat engine exhausts 8000 J of heat while performing 2700 J of useful work. What is the efficiency of this engine

For which pair of objects would adding the same a

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.