Give four reason why it is important to clean the teeth regularly

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

What can you increase the strength of an electromagnet by

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false