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1. Atmospheric pressure is about 1.0x105 Pa. If a submarine travels underwater to a depth of...

1. Atmospheric pressure is about 1.0x105 Pa. If a submarine travels underwater to a depth of 0.53km,

(a) what is the total pressure on the submarine?

(b) What is the force exerted on a 0.08m2 porthole at that depth?

2. An ideal gas occupies a volume of 5x10-5 m3 at a pressure of 4,000 Pa and a temperature of 0°C. The gas is expanded to a volume of 0.006 m3 during which time its pressure drops to 350 Pa. What is the new temperature of the gas?

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