Forces always act in pairs.

True

False

Which quantity has both a magnitude and a direction? (1) energy (3) power (2) impulse (4) work

Suppose that the supply of aged cheddar cheese is inelastic, and the supply of bread is elastic. Both goods are considered to be normal goods by a majority of consumers.

Sunlight strikes a solar panel, which is then used to power the lights in a house. What are the energy transformations taking place in this system? O A. Thermal energy to chemical energy to kinetic energy O B.

Which of the following planets has the highest surface temperature as compared to the others? Earth Jupiter Mars Venus

8. During the last few kilometers of a marathon, runners play mental games to test each other out. They accelerate to see if the other runners will accelerate also. If a runner has a velocity of 5 m/s and accelerates to 5.

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

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