Two dart guns both shoot the same darts. One is noted to shoot its dart with a velocity 4 times greater than the other dart gun. How would the kinetic energy of the darts coming out of the faster gun compare to that of the weaker gun?

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