A75-kg refrigerator is located on the 70th floor of a skyscraper (300 meters above ground). what is the potential energy of the refrigerator?

220,500

Explanation:

it would be this because 75 times 9.8 times 300 would be 220,500

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.