You are designing a diving bell to withstand the pressure of seawater at a depth of 240 mm. 1. What is the gauge pressure at this depth? (You can ignore changes in the density of the water with depth.) Express your answer in pascals. 2. At this depth, what is the net force due to the water outside and the air inside the bell on a circular glass window 31.0 cmcm in diameter if the pressure inside the diving bell equals the pressure at the surface of the water? (You can ignore the small variation of pressure over the surface of the window.)

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.