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Water is pumped from a lower reservoir to a higher reservoir with a pump that draws 20 kW of electrical power. The free surface of the upper reservoir is 45 m higher than that of the lower reservoir. If the flow rate of water is gauged to be 0.03 m^3/s, Decide the power lost to friction in this setup. Take water = 1000 kg/m3
Two thin slits are 0.050 mm apart. Monochromatic light of wavelength 634 nm falls on the slits. If there is a screen 6.0 m away, how far apart are adjacent interference fringes?
A high-voltage transmission line with a resistance of 0.345 ?/km carries a current of 1.45 kA. What is the power loss due to resistance in the line
The electric field strength is 5*10^4 N/C inside a parallel-plate capacitor with a2.2mm spacing, What is the proton's speed when it reaches the negative plate
A river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore with maintaining a constant velocity of 11.0 m/s due north relative to the water. What is the velocity of the boat relative to shore?
At a point where an irrigation canal having a rectangular cross section is 18.9 m wide and 3.65 m deep, the water flows at 2.55 cm/s. How deep is the canal at this point
A physicist uses a cylindrical metal can 0.210m high and 0.075m in diameter to store liquid helium at 4.22 K; How much helium is lost per hour? The emissivity of the metal can is 0.200
Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 3.60 m/s. Ignore frictional losses. What is the height of the hill?
question1attempting to stop on a slippery road a car moving at 85 skids across a road at a 30 angle to its initial
A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 19.8° above the horizontal. What is the tension in the rope
A 1.2 kg block rests on a frictionless surface and is attached to a horizontal spring of constant k = 27 N/m. The block is oscillating with amplitude 15 cm, Determine the frequency of the resulting motion
n achromatic lens is made of two very thin lenses, with focal lengths f1 = -28.7 cm and f2 = +20.4 cm, What is the focal length of the achromatic lens
An ice cube of volume 8.5 cm3 is initially at a temperature of -16.5°C. Determine how much heat is required to convert this ice cube into steam
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