A boy throws a ball of mass 0.24 kg straight upward with an initial speed of 24 m/s. When the ball returns to the boy, its speed is 15 m/s. How much work (in J) does air resistance do on the ball during its flight

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

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