A rock rolls down a steep hill. Its intial velocity is 1 meter per second. By the time it reaches the bottom of the hill 30 seconds later. Its velocity is 7 meters per second. What is the acceleration of the rock

A pitcher exerts 100.0 N of force on a ball with a velocity of 45 m/s. What is the pitcher's power? A 50.0 kg sailor climbs a 28.3 m rope ladder at an angle of 45 degrees with the mast. How much work did he do? An inclined plane is 5.00 m long and 2.

When a wave is acted upon by an external damping force, what happens to the energy of the wave

Does the value of the equilibrium constant depend on the initial concentrations of the reactants and products? Does the value of the equilibrium constant depend on the initial concentrations of the reactants and products? yes no

A simple machine that is a straight slanted surface is

This is a measure of the average kinetic energy of a substance.

Which statement is correct about gasoline when it is burned? Heat energy is created by the gasoline. The total energy of the gasoline decreases. Chemical energy in the gasoline is destroyed. Chemical energy is transformed into heat energy.

The tilt of the Earth's axis of rotation changes over a period of 41,000 years. Which of these statements best predicts a long term effect of the changes in the tilt of the Earth's axis of rotation? a. The Earth's climate would change. b.

What do keratinized cells form?

Explain why Planck's introduction of quantization accounted for the properties of black-body radiation.

How and which waves travel either through a medium or a vacuum?