Compared with the mass of a dozen eggs

Compared with the mass of a dozen eggs, the mass of air in an “empty refrigerator” is 1. negligible. 2. about a tenth as much. 3. about the same. 4. more.

Compared with the mass of a dozen eggs, the mass of air in an “empty refrigerator” is 1. negligible. 2. about a tenth as much. 3. about the same. 4. more.

Consider a flexible plastic bottle containing both air and water immersed neck down in an open dish of water. The water level in the bottle will 1. fall if pinched at A but rise if pinched at B. 2. fall if pinched at A or at B. 3. fall if pinched at A but stay where it is if pinched at B. 4. rise if pinched at A but stay where it is if pinched at B. 5. stay where it is if pinched at A or at B.

Consider a flexible plastic bottle containing both air and water immersed neck down in an open dish of water. The water level in the bottle will 1. fall if pinched at A but rise if pinched at B. 2. fall if pinched at A or at B. 3. fall if pinched at A but stay where it is if pinched at B. 4. rise if pinched at A but stay where it is if pinched at B. 5. stay where it is if pinched at A or at B.

In the presence of air, the small iron ball and large plastic ball balance each other. When air is evacuated from the container, the larger ball 1. rises. 2. falls. 3. remains in place.

In the presence of air, the small iron ball and large plastic ball balance each other. When air is evacuated from the container, the larger ball 1. rises. 2. falls. 3. remains in place.

Consider a Ping-Pong ball floating in a glass of water that is in an air-tight chamber. When air pressure is increased in the chamber, does the ball float lower, higher, or as before? 1. Lower 2. Higher 3. As before

Consider a Ping-Pong ball floating in a glass of water that is in an air-tight chamber. When air pressure is increased in the chamber, does the ball float lower, higher, or as before? 1. Lower 2. Higher 3. As before

Consider an air-filled balloon weighted so that it is on the verge of sinking—that is, its overall density just equals that of water. Now if you push it beneath the surface, it will 1. sink. 2. return to the surface. 3. stay at the depth to which it is pushed.

Consider an air-filled balloon weighted so that it is on the verge of sinking—that is, its overall density just equals that of water. Now if you push it beneath the surface, it will 1. sink. 2. return to the surface. 3. stay at the depth to which it is pushed.

A pair of identical balloons are inflated with air and suspended on the ends of a stick that is horizontally balanced. When the balloon on the left is punctured, the balance of the stick is 1. upset and the stick rotates clockwise. 2. upset and the stick rotates counter-clockwise. 3. unchanged.

A pair of identical balloons are inflated with air and suspended on the ends of a stick that is horizontally balanced. When the balloon on the left is punctured, the balance of the stick is 1. upset and the stick rotates clockwise. 2. upset and the stick rotates counter-clockwise. 3. unchanged.

A short and a long candle burn in an open jar as shown. When the jar is covered the candle to go out first will be 1. the short candle. 2. the tall candle. 3. 50 -50, a toss up.

A short and a long candle burn in an open jar as shown. When the jar is covered the candle to go out first will be 1. the short candle. 2. the tall candle. 3. 50 -50, a toss up.

Water with air bubbles flows through a pipe that becomes narrower. In the narrow region the water gains speed and the bubbles are 1. larger. 2. smaller. 3. the same size.

Water with air bubbles flows through a pipe that becomes narrower. In the narrow region the water gains speed and the bubbles are 1. larger. 2. smaller. 3. the same size.

You’re driving in a convertible car with the top up and the windows closed. You note that the fabric top puffs up. To explain this interesting phenomenon you invoke 1. Bernoulli’s principle 2. Newton’s laws 3. Both

You’re driving in a convertible car with the top up and the windows closed. You note that the fabric top puffs up. To explain this interesting phenomenon you invoke 1. Bernoulli’s principle 2. Newton’s laws 3. Both