Three 1.0 kg masses are located at the corners of a vertically standing equilateral triangles with sides 0.80 m long. (a) what is the mutual gravitational potential energy?

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 is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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