Easy physics question?

Question

Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure at a depth of 15m below the surface of the ocean?

Answer 1

The increase of pressure with depth in a fluid is pgh where p is the density of the fluid. The absolute pressure is the increase in pressure, plus the pressure at the top (1 atmosphere in your problem). So,

P = 1.01 x 10^5 Pa + ( 1025 kg /m^3 )( 9.8 m/s^2 )( 15 m )

Answer 2

brenna,

a good number to remember to "check" your answer is that for every 10 m down, pressure increases by 1 atmosphere (1.01E5Pa). Of course you need to add the 1 atmosphere of the atmosphere.

Answer 3

If it is so easy, then why are you asking US? If there is a physics tutoring room at your college, you might try asking there...

Answer 4

brenna brenna bobenna banana bana bo benna....physics is all around us

Answer 5

i don't know but add [e-mail]