# Physics

(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.
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

1. 👍 1
2. 👎 0
3. 👁 3,210
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

1. 👍 0
2. 👎 0
2. asa

1. 👍 0
2. 👎 0
3. a.) 116kpa
b.) 52 Pa

1. 👍 0
2. 👎 1

## Similar Questions

1. ### physics

A lead ball is dropped into a lake from a diving board 5.24 m above the water. It hits the water with a certain velocity and then sinks to the bottom with this same constant velocity. It reaches the bottom 4.86 s after it is

2. ### Physics

A storage tank of negligible mass and 30m high is filled with gasoline. Please calculate the following. Use density values found in the book. a) The gauge pressure and absolute pressure at the bottom of the tank. b) The force that

3. ### Math

The pressure p at the bottom of swimming pool varies directly as the depth d of the water. If the pressure is 125 Pascal when the water is 2 meters deep, find the pressure when it is 4.5 meters deep.

4. ### Science

The pressure P at the bottom of a swimming pool varies directly as depth of water. If the pressure is 125 paacal when the water is 2m deep ,find the pressure when it 4.5 meters deep.

1. ### Physics

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 15.0m below the surface of the ocean? Could you show me how to do this problem? Thank

2. ### physics

The greatest ocean depths on earth are found in the Marianas Trench near the Philippines, where the depth of the bottom of the trench is about 11.0 km. Calculate the pressure(atm)due to the ocean at a depth of 10.1 km, assuming

3. ### Physics

pressure of a fluid. calculate the a.) absolute pressure b.) gauge pressure at an ocean depth of 1000m. Assume the density of a sea water is 1024 kg cubic meter and that the air above exerts a pressure of 101.3kPa

4. ### Physics

Water has a density of 1000kg/m^3. The depth of a swimming pool at the deep end is about 4m. A)What is the volume of a column of water 4m deep and 1m^3 in cross-sectional area? B)What is the mass of this column of water? C)What is

1. ### Thermodynamics

A tank is filled with fresh water until there is a depth of 35 ft. Determine the pressure, psig, at the bottom of the tank.

2. ### PHYSICS!

In scuba diving, a regulator is used so that the pressure of the air the diver breathes is close to that of the ambient water. A reckless swimmer decides to use a hose sticking out of the surface to breathe underwater while diving

3. ### Social Studies

What Asian body of water contains 20 percent of the planet's surface fresh water? a. The Yangtze River b. Lake Taupo c. Lake Baikal d. The Dead Sea

4. ### physics 2

A reservoir dam holds an 8 km2 lake behind it. Just behind the dam, the lake is 14.0m deep. What is the gauge pressure at the base of the dam (in Pascals)? What is the absolute pressure at a point 2.5 m down from the surface?