A car moving west slows down from a velocity of 50 m/s to 20 m/s in 15 seconds. What is its acceleration?

Which statement below best describes the quantum view of light and matter? A. Light behaves like a wave sometimes, and sometimes like a particle; matter always behaves like a particle. B. Light behaves like a wave, and matter behaves like particles.

Which of the following best describes a mechanical wave? A. A periodic disturbance of a medium. B. A movement of matter. c. A transfer of energy. D. When energy is converted from one form to another.

Why is magnesium the limiting reactant in this experiment

Planet X is? ...

If a machine has 100% efficiency, it means that A. output work is equal to input work. B. output force is equal to input force. C. output work is twice the input work. D. output force is twice the input force.

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.

Choose The units of 1/4πε0 are: A. N2C2 B. N • m/C C. N2 • m2/C2 D. N • m2/C2 E. m2/C2

What does a fern ultimately depend on as an energy source?

According to the Doppler Effect, which statement is true about a sound as it approaches you and then moves away. A) As the source approaches you, the sound waves are compressed so the pitch of the noise increases.

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?