An ammeter is connected to a circuit consisting of a switch, a battery, a lamp, and
the appropriate wires. The switch is closed, but no current is observed. Suggest
two possible reasons for this.

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