the tank is filled with salt water (specific weight=64 lb/ft^3) to a depth of 8ft. the pressure exerted by the water on the bottom of the tank, above atmospheric pressure is...

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anonymous · Answer

attachment

anonymous · Answer

us measurement is confusing me...and the part that says "above atmospheric pressure"

anonymous · Answer

so Pa doesn't equal 1.013*10^5 Pa??

anonymous · Answer

1 atm = 101.3 kPa

anonymous · Answer

alright, so the statement in quotes mean nothing significant?

anonymous · Answer

It does. Let me explain. $$P_{bottom} = P_{water} + P_{atm}$$$$P_{water} = \rho g h = SW*h$$
$P_{water}$ will have units pounds per square foot with the given data. Since we are considering the pressure about atmospheric at the bottom. Then$$P_{bottom} = SW*h$$We need to convert units$$P_{bottom} = SW * h \left [ \bf lb \over ft^2 \right ] * \left [\bf 1 ft^2 \over 144 i n^2 \right ]$$

anonymous · Answer

SW=specific weight? so that replaces roh*g?

anonymous · Answer

Yes.