College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Steel ball with radius of 0.09 m lays on a bottom of the lake 5 m deep. What work is needed to lift the ball to the surface of the lake? Density of steel is 7860kg/m3. The volume of a sphere is
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- A pump is used to empty a 5600 L wading pool. The water exits the 2.0-cm-diameter hose at a speed of 2.2 m/s . How long will it take to empty the pool?arrow_forwardAn aquarium 11m long, 2m wide, and 9m deep is full of water. The density of water is 1000kg/m3 and the force of gravity is 9.8m/s2 a) Find the work needed to pump all of the water out of the aquarium b) Find the work needed to pump half of the water out of the aquarium.arrow_forward6.2arrow_forward
- Answer for a) is 1.06 x 10^6 J The answer for b) is 4.43 x 10^6 Jarrow_forwardWater flows at 1 m/s from a hot water heater, through a 45o kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 5 m above the heater is 350 kPa. Whats the speed in this upstairs pipe? Answer in M/sarrow_forward
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