What is a free fall?

What is half-life? a. Half-life is a term that describes the time it takes for half of a particle to disintegrate c. Half-life is a term that describes the time it takes for the amount of radioactivity to increase by one half. b.

If you lived downhill from a volcano and lava started to flow toward your home what could happen?

A 0.200-kilogram ball A is traveling at a velocity of 2 meters/second. It hits a 1-kilogram stationary ball B. Which statement is true of the motion of the balls if the collision is elastic?

If you are above the surface of the Earth what happens to the force of gravity as you get closer to the center of the Earth? A. Increase B. Decrease C. Stay the same

Which is an example of radiation? Check all that apply. 1. Troy's hand is burned when he touches hot wax. 2. Earth is heated by energy from the Sun. 3. A hot dog is held over a fire and gets warm. 4. Soup is heated in a microwave. 5.

A uniformly charged thin ring has radius 15.0 cm and total charge 23.5 nC. An electron is placed on the ring's axis a distance 30.5 cm from the center of the ring and is constrained to stay on the axis of the ring.

Some people refer to nuclear power as "clean energy." Why do they make this argument? Do you agree or disagree? Explain your answer.

What does thermal energy mean?

Oil having a density of 924 kg/m 3 floats on water. A rectangular block of wood 3.79 cm high and with a density of 970 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block.

Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?