What percentage of earths mass does the mantel have?

A scientific hypothesis may turn out to be right or it may turn out to be wrong. If it is a valid hypothesis, there must be a test for proving that it is right. lawful. theoretical. wrong.

2.0 kg mass is lifted4.0m above the ground find the gravitational energy

The universe could be considered an isolated system because 1many people think that no energy or matter exists outside the universe. 2energy and matter are created in the universe and flow freely into and out of the universe.

Which is the SI base unit for distance? A. cm B. km C. m D. mm I think its C. m

When one ball is raised, it acquires potential energy which is then transformed into kinetic energy once the ball is released. In theory, the total energy should be conserved such that the balls continue in perpetual motion.

Niko was hiking in the mountains when he found a spring, or a place where water naturally flows out of the ground. Where did the water in the spring come from? A. It is water that was squeezed out of an igneous rock when the rock changed. B.

Is mount st. Helen still active today

When a pendulum swings if not continuously pushed it will stop eventually because some of its energy is changef into what energy

How does a car's kinetic energy change when it speeds up from 10 to 20 m/s? a. It quadruples. b. It stays the same. c. It doubles. d. It triples.

A boulder on the mythical planet mongo drops off a cliff and falls from rest 1000 m in 10.0 s. (A) what's the initial speed of the Boulder? (B) determine the acceleration due to gravity on mongo. Ignore friction.