Pressure and speed of the water
Water pressurized to 3 x10^5 Pa is flowing at 5.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction? (Density of water = 1 X 10^3 kg/m^3)
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Its reservoir sits 146 above its generating station and holds 9.0×109 of water. The power plant generates 316 of electric power while draining the reservoir over an 7.6 period. Its efficiency is the percentage of the stored potential energy
Water pressurized to 3 x10^5 Pa is flowing at 5.0 m/s in a pipe which contracts to 1/3 of its former area. What are the pressure and speed of the water after the contraction?
A charge of 3.45 µC is held fixed at the origin. A second charge of 3.45 µC is released from rest at the position (1.15 m, 0.350 m). If the mass of the second charge is 2.90 g, what is its speed when it moves infinitely far from the or
Determine the normal force for a laundry basket with a mass of 4.8 kg in each of the following situations (a) at rest on a horizontal surface (b) at rest on a ramp inclined at 12 above the horizontal
Students are having a water balloon fight in the hallway. The ceiling is of height 3.4m, and the balloons are launched at a velocity of 11 m/s. The acceleration of gravity is 9.8 m/s^2. At what angle must they be launched to just graze the ceiling
A 65 kg human sprinter can accelerate from rest to 10 m/s in 2.9 s. During the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. Compute (a) the change in kinetic energy and (b) the average power output for each.
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