(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.
(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?
Physics - Matt, Friday, November 4, 2011 at 12:48am
Density of H2O = 1E^3 = 1000kg/m^3
Pair = 101.3 = 101300 Pa
Pwater = (Density of H2O)*Depth*gravity
Ptotal = Pair + Pwater
diameter = 33.1cm
r = 1/2 diameter
Area = pi*r^2
Force = Ptotal * Area
Physics - asas, Thursday, June 27, 2013 at 12:32pm
Physics - hyun park, Thursday, November 14, 2013 at 6:14am
b.) 52 Pa