Once again, the ideal gas law was used to good effect. This problem shows how ev

Question

Once again, the ideal gas law was used to good effect. This problem shows how even answering a fairly simple question can require the application of several different physical concepts: density, buoyancy, the ideal gas law, and hydrostatic equilibrium. If a glass is turned upside down and then submerged in water, what happens to the volume of the trapped air as the glass is pushed deeper under water? (Select all that apply.) It decreases because of the increase in temperature from work done by submerging it. It decreases because of the increase in pressure exerted by the water. It decreases because the pressure of the trapped air increases. It increases because there is less water below pushing up. It increases because the glass gets farther from the surface of the water. It increases because there is more water above pushing down.

Explanation / Answer

As the depth increases pressure of the water increases. And hence pressure of air increases. Hence volume of air decreases.

!) It decreases because of the increase in pressure exerted by the water

2) It decrease because of the pressure of the trapped air increases.

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