You push a refrigerator with a horizontal force of 100N. If you move the refrigerator a distance of 5m while you are pushing, how much work do you do

Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results

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 ?

What are the phases shown in a and d called?