Fluids Quiz True or False

1. What properties can be used change the state of matter of a fluid? -> Volume and Pressure
2. The apple is used for space travel experimentation and placed on the floor of a rocket that accelerates upwards at a rate of . What happens to the apple in space? -> It remains on the floor of the rocket.
3. While attending cooking school, we decide to create a signature salad dressing called Shmoop's. The ingredients at our disposal are olive oil, vinegar, and lemon juice. There are to be equal amounts of each ingredient by mass. We make 10 ml of dressing in all. Knowing that the density of oil is , the density of vinegar is , and the density of lemon juice is , what is the mass of the dressing in grams? -> 0.273 g
4. You accidentally run over an apple with your car, such that it becomes a thin slab. Which of the following statements is correct? -> The volume is reduced, so the density gets lower.
5. Archimedes attends Zeus' garden party. Eris throws an apple of osmium over the fence with an apple volume of 2.4 × 10-4 m3. What does Archimedes do to test the metals of Eris' apple? -> He measures the amount of water displaced by Eris' apple.
6. A human being has a mass of 70 kg. What weight will he be when he swims in deep water? -> 686 N
7. An object has a density of and a volume of 1 m3. What happens when you drop the object in a deep lake? -> The object floats submerged in water in a state of hydrostatic equilibrium.
8. Air has a density of at sea level. A beach ball filled with air is expanded to a volume of 2 m3. Why does the beach ball float on ocean water? -> Because the ball's surface area is wide enough to counteract the effects of gravity
9. Bernoulli's equation was derived assuming that h1 was smaller than h2. What would change in the equation if it was the other way around? -> The pressure of a fluid would increase while traveling through a smaller area.
10. What information are we missing to calculate how water displacement changes as a silver box with volume V = 100 cm3 sinks slowly to the bottom of the ocean? -> We are not missing any information.

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