Water in the lake behind Hoover Dam is 221 m deep. What is the water pressure at the base of the dam?
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- Many cities have water tanks raised high off the ground to produce pressure for their residence. If one such water tank had a diameter of 4.40 m and its water level being 20.7 m above the ground. What would be the pressure at ground level if the water was not being used? (static)If at ground level a faucet had an opening with a diameter of 2.00 cm, how fast would the water come out of the faucet?Water flows with a constant speed through a pipe of constant cross-sectional area in the ground floor (y1=0m) of a house. The pipe rises (y2=5.0m) to reach a shower head on the second floor. The pressure at ground level is 140kPa. a) what is the pressure at the shower head? b) what is the maximum height that water from the ground level could reach?A hollow plastic sphere is held below the surface of a lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.650 m3 and the tension in the rope is 900 N. (a) Calculate the force of pushing water on the sphere. (b) What is the mass of the sphere? (c) The cord breaks and the sphere rises to the surface. When the sphere stops, what fraction of its volume will be submerged?
- The water pressure acting on a submarine at depth is 2.6 x 106 Pa. What is the magnitude of the force (in kN) that acts on a hatch door with an area of 0.87 m2A water pipe having a 2.59 cm inside diameter carries water into the basement of a house at a speed of 0.770 m/s and a pressure of 213 kPa. If the pipe tapers to 1.31 cm and rises to the second floor 6.71 m above the input point, A) What is the speed of the water at the second floor? B) What is the water pressure at the second floor?Water is supplied to an office building 30.0 m high through a pipe at ground level. (a) Find the minimum pressure in the supply pipe so that water can reach the top floor of the building. (b)Suppose the pressure in the supply pipe is designed so that water can flow out through a much smaller pipe on the top floor at a speed of 5.0 m/s. Find the pressure in the larger pipe on the ground floor.
- A cylindrical bucket, open at the top, is 35.0cm high and 9.0cm in diameter. A circular hole with a cross-sectional area 1.75cm^2 is cut in the center of the bottom of the bucket. Water flows into the bucket from a tube above it at the mtc of 3.20x10-4 m3/s. How high will the water in the bucket rise?Suppose you have a 8.8 cm diameter fire hose with a 3.6 cm diameter nozzle. a) Calculate the pressure drop due to the Bernoulli effect as water enters the nozzle from the hose at the rate of 40.0 L/s. Take 1.00 × 103 kg/m3 for the density of the water. b) To what maximum height, in meters, above the nozzle can this water rise? (The actual height will be significantly smaller due to air resistance.Water at a pressure of 3.85 x 105 N/m2 at street level flows into an office building at a speed of 0.68 m/s through a pipe with a radius of 2.5 cm. The pipe tapers down to 1.4 cm in diameter by the top floor, 18 m above the street. The flow speed is 2.2 m/s at the top floor. Calculate the pressure in the pipe on the top floor.
- A horizontal pipe of cross-sectional area 0.29 m2 at height 6 m carries water at speed 1.9 m/s. The pipe turns upward and levels out again to horizontal at height 14 m, where the pipe narrows to 0.11 m. If the pressure is 202 kPa at the original height, what is the pressure in kPa at the final height? The density of water is 1000 kg/m3. kPaA water pipe having a 2.92 cm inside diameter carries water into the basement of a house at a speed of 0.936 m/s and a pressure of 185 kPa. If the pipe tapers to 1.57 cm and rises to the second floor 6.94 m above the input point, what are the (a) speed and (b) water pressure at the second floor?Water travels through a pipe at 11.1 m/s. The pipe expands from a crossectional area of 1.5 m2 to an area of 12.0 m2. What is the speed of the water in the second part of the pipe in m/s? How much is the pressure change in KPa as the pipe expands? The density of water is 1000 kg/m3. Enter a positive value for an increase in pressure, a negative value for a decrease.