# Physics

for every 10 m you descend below the surface of water, the pressure on you will increase by an amount equal to atmospheric pressure 101kpa. an air bubble in a lake has a volume of 20 mm^3 at a depth of 40m. predict what volume it will have just before reaches the surface?

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1. at surface pressure = 1 atm

gains 4 atm so at 5 atm at 40 m

pressure is 1/5 so volume is 5 times at surface

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2. Yes

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5. I don't know this question

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