# Finding pressure in a diving bell

#### lillybelle14

1. Homework Statement
At the surface, where the temperature is 27 °C, the volume of air in Dan’s diving bell is 2 metres cubed. When he descends to a depth of 10 m the pressure doubles and the temperature drops to 7 °C. What volume of air does Dan have in his diving bell now?

2. Homework Equations
P1 x V1/T1 = P2 x V2/T2

3. The Attempt at a Solution
P1= ? P2= ?
V1= 2 metres cubed V2= ?
T1= 27 °C (300 Kelvin) T2= 7 °C (280 Kelvin)

Im having trouble finding out P1 and therefore I can't find out P2 and V2!
Thanks
1. Homework Statement

2. Homework Equations

3. The Attempt at a Solution

Related Advanced Physics Homework Help News on Phys.org

#### Doc Al

Mentor
Im having trouble finding out P1 and therefore I can't find out P2 and V2!
You don't need the actual pressure, just the fact that it doubles. Express P2 in terms of P1.

(Although: What's the pressure at the surface of the water?)

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