At a depth of 10 m water exerts a pressure equal to the atmospheric pressure. An air bubble rises
to the surface of a lake from a depth of 30 m
deep. When the bubble reaches the surface, its
volume is 6.0 cm'. What was the initial volume
of the bubble?
0
18.0 cm3
24.0 cm3
0
2.0 cm3
1.5 cm3

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