A75-kg refrigerator is located on the 70th floor of a skyscraper (300meters a over the ground) what is the potential energy of the refrigerator?
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We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 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 energy added you so much!

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in