A 5-kg boulder sits on the edge of a cliff 30 m above the roadway. What is the gravitational potential energy of the boulder on the cliff?

In three experiments, three different horizontal forces are applied to the same block lying on the same countertop. The force magnitudes are F1 = 12 N, F2 = 8 N, and F3 = 4 N.

One example of a physical change is a. burning paper. b. baking cookies. c. the rusting of iron. d. mixing a milkshake.

7. If silicon-32 has a decay chain with the following steps: Step #1 - Alpha Particle Step #2 - Beta Particle What is the final radioactive isotope left at the end of this decay chain?

A driver wearing a seat beat decelerates at roughly the same rate as the car it self. Since many modern cars have a "crumble zone" built into the front of the car, let us assume that the car decelerates of a distance of 0.9 m.

How does the ability to balance a chemical equation relate to that reaction obeying the Law of Conservation of Matter?

Alternative between running snd walking

A certain nuclear power plant is capable of producing 1.2*10^9 W of electric power. During operation of the reactor, mass is converted to energy.

Which has the greater density, a lake full of water or a cup full of lake water?

A ladder placed up against a wall is sliding down. The distance between the top of the ladder and the foot of the wall is decreasing at a rate of 9 inches per second.

What number is neutrons protons electrons of helium