What natural ecological change might happen to the meadow that forms were the ponds was

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

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical