An 80-kg hiker climbs to the top of a tall hill and builds up 470,000 j of gravitational potential energy. How high did the hiker climb? round the answer to the nearest hundred.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

During a load test, a battery's voltage drops below a specified value. what action should the technician take?

Students taking a clep exam can earn between college credits, depending on the college's policies.