Endorphins are generated in the body during exercise, which leads to better emotional health true or false

Arock collection comes from which part of earth?

In a system, when potential energy decreases, then entropy also decreases. true false

Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)