A 90.0 kg man climbs hand over hand up a rope to a height of 9.47 m. How much potential energy does he have when he reaches the top?

Which of the following describes something an engineer would probably do first when developing new technology meant to reduce ocean pollution? o a. evaluate the benefits and challenges of using certain chemicals to purify water. o b. research new scientific findings in regard to ocean cleanup. o c. identify the need to reduce ocean pollution. o d. research what has been done in the past to clean up oceanic oil residue.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.