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1. Oil (S ¼ 0.92) is pumped from a storage tank and discharges into a reservoir through a pipe whose length is L ¼ 550 m and diameter is D ¼ 350 mm. The pump efficiency is Z ¼ 80% and its power output is WW_ P ¼ 10 kW. Determine the discharge Q if the elevation in the tank is zA ¼ 24 m, the tank pressure is pA ¼ 110 kPa, and the lower reservoir elevation is zB ¼ 18 m. The sum of the minor losses in the pipe is SK ¼ 4.5 and the friction factor is f ¼ 0.015.
A golfer rides in a golf cart at an average speed of 3.63 m/s for 32.3 s. She then gets out of the cart and starts walking at an average speed of 1.16 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and w..
To test the impact performance of a 10 cm thick gymnastics mat, a 20 kg cylindrical mass is dropped onto the mat from a height of 1 m above the mat. How much work does the mat do to stop the fall of the cylinder
An alpha particle (q = +79e, m = 6.68 x10^-27kg) is fired from a distance of 10 cm at a gold nucleus (q = +79e). find the change in electric potential for the alpha partical
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp (?=668.0nm)
A plane flies at a speed of 100m/s relative to still air. There is a wind blowing at 40m/s, 55 degrees to the east of north. What is the speed of the plane relative to the ground?
In exercising, a weight lifter loses 0.124 kg of water through evaporation, find the change in the internal energy of the weight lifter
A playground ride consits of a disk of mass M = 47kg and radius R = 1.6 m mounted on a low friction axle. A child of mass m = 18kg runs at speed v =2.7 m/s on a tangential to the disk and jumps onto the outer edge of the disk.
Water flows at 12 m/s in a horizontal pipe by a pressure of 3.0X104N/m2. If the pipe widens to twice its original radius, what is the pressure in the wider section?
Heat is added to two identical samples of a monatomic ideal gas. In the first sample the heat is added while the volume of the gas is kept constant, By how much does the temperature of this sample increase
What is sweep time of a scan with a sweep rate of 60Hz? Is the true resistance greater or smaller than the gauged resistance? Is the time base affected by changing the horizontal and vertical gains?
a proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths?
question1a stone is thrown upward from the edge of a cliff reaches its greatest height and next falls down into the
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