If a 20kg mass hangs from a spring, whose elastic constant is 1800 N / m, the value of the spring elongation is

Avalue that describes how heavy an object is and is related to the force of gravity is

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack