Which of the following statements are IMPOSSIBLE? Choose all that apply. 1. A pe

Question

Which of the following statements are IMPOSSIBLE? Choose all that apply.

1. A perfectly functioning hydraulic had a pressure of 24 Pa in the fluid near the small piston and a pressure of 14 Pa in the fluid near the big piston.

2. A 40 L container displaced 21 L of orange juice when fully submerged.

3. A substance underwent boiling during which its temperature changed 18 K.

4. A 33 oz brick was fully submerged in water. The buoyant force on the brick was 33 oz. As a direct result, the brick was neutrally buoyant.

5. Last Wednesday, the Sun heated the Moon via convection.

6. The temperature inside a physics laboratory chamber was measured to be 11 °C.

Explanation / Answer

1. Impossible. Pressure in a perfect hydraulic system is uniform throughout. 2. Impossible. A container cannot be smaller on the outside than on the inside. 3. Impossible. Boiling is a change of state, and temperature remains constant until all material has changed phase. 4. Possible. Since the brick is not of a specified material, it could be any material of the same density as water. 5. Impossible. The sun does not have a fluid in contact with the Moon. Therefor, no convection is possible. 6. Possible. This is a reasonable temperature in an unheated room in winter.

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