Two points charges are brought closer together, increasing the force between them by a factor of 25.By what factor wa their separation decreased?

What do you think car designers do if the damage caused by a crash test is too severe?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

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