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The phase change of a solid directly into a vapor or gas.

T or F Substances that lose electrons in reactions are called reducing agents.

The form of heat transfer that sometimes involves energy traveling through space is known as what?

A bottle of liquor contains 40% alcohol by volume. This means that the liquor contains 40 mL of alcohol

A pendulum is pulled back, then released. Where is its kinetic energy the maximum?

A 0.250 kg ball travels at a velocity of 40 m/s. Its momentum is

A ball dropped from a building falls for 5.00 seconds before it hits the ground. What was its final velocity just as it hit the ground? Neglect air resistance.

Which of Newton’s Laws explains the tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force?

A car is moving straight down a highway under ideal conditions. What factor has the greatest influence on how much work must be done on the car to bring it to a complete stop? Hint: It’s the variable that gets squared in the kinetic energy formula.

You are moving a grocery cart at a constant speed in a straight line down the aisle of a store. The horizontal forces on the cart are