# physic

you are designing a diving bell to withstand the pressure of sea water at a depth of 250m. a)what is the quage pressure at the depth(you can ignor the small changes in the density of the water with depth.) b)at the 250m depth, what is the net force due to the water outside and the air inside the bell on the circular glass window 30.0cm in diameter if the pressure inside the diving bell equals the pressure at the surface of the water?(you may ignor the small variation in pressure over the surface of the window)

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1. (a) (depth)*(water density)*g
(b) (window area)*(gauge pressure)

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2. a) 2.52x10^3Pa

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