(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa.

Question

Pa

(b) What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 33.1 cm?
N

Answer 1

a)
Density of H2O = 1E^3 = 1000kg/m^3
Pair = 101.3 = 101300 Pa

Pwater = (Density of H2O)*Depth*gravity

Ptotal = Pair + Pwater

b)
diameter = 33.1cm
r = 1/2 diameter
Area = pi*r^2

Force = Ptotal * Area

Answer 2

asa

Answer 3

a.) 116kpa
b.) 52 Pa

Answer 4

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