Determine the mechanical energy for this object: a 1-kg ball sits on a 10-meter high cliff.

A. 10 J

B. 98 J

C. 980 J

D. The ball isn't moving, so the mechanical energy is zero

What is radioactive decay

The number 0.00243 has how many significant digits? a. 3 b. 4 c. 5 d. 6

Why do the plants at the bottom of a pond grow better than plant on the bottom of a lake

Your heating system is 60% efficient. If it consumes 12,052 kWh of energy to heat your house, how much useful energy (kWh) does it produce?

Does mass affect how long it takes an object to reach the ground from a high drop height?

Can more than two waves can interfere in a given medium

Which best explains why the noble gases are chemically unreactive? They have no valence electrons. They have the same number of protons and electrons. They have more neutrons than protons. They have very stable outer electron shells.

Hydraulic systems utilize Bernoulli's principle? true or false

An atom of gadolinium has an atomic number of 64 and a mass number of 154. how many electrons, protons, and neutrons does it contain?

Name four type of friction and give one example for each