A 1.11 kg ball sits at rest on a table above the ground. What is the height of
the ball above the ground if it has
potential energy of 53 J?consider the
acceleration due to gravity of the earth. please explain everything

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

If a simple machine reduces the strength of a force, what must be increased?

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter