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An open-topped tank completely filled with water has a release valve near its bottom. The valve is 1.87 m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top of the tank, AT, is a = 12.3 times the cross-sectional area, AV, of the valve opening.
a) Calculate the speed of the water as it exits the valve. Neglect friction and viscosity.
b) In addition, calculate the speed of a drop of water released from rest at h = 1.87 m when it reaches the elevation of the valve.
A 63-kg skier is going down a slope oriented 31° above the horizontal. Determine the pressure that each ski exerts on the snow
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A tube of mercury with resistivity 9.84*10^-7 *m has a 23 N/C electric field inside the column of mercury. How much current is flowing, if the diameter of the tube is
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