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A motor has a disk mounted on its shaft. The disk has a diameter of 1 foot and weighs 60 pounds. Starting from rest, the motor rotates at 350 rpm after 5 seconds. If the motor has a 92% efficiency, determine the input power in watts.
water 15 c flows in a horizontal schedule 40 pipe that has a nominal diameter of 0.5 in. the reynolds number is re1000.
assume that the flow of air through a given duct is isentropic. at one point in the duct the pressure and temperature
in a pipe 0.3 m in diameter 0.3 m3s of water is pumped up a hill. on a hilltop elevation 48 m the line reduces to 0.2 m
suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactlyseven months as
500 galmin 30 ls of 100 degree f 40 degree c water flows through 300 ft 90m of 6-inch sch 40 steel pipe. the pipe
an object whose mass is 50kg is suspended at rest a height of 68 meters above the surface of the earth. the object is
a titanium alloy with a modulus of elasticity of 16 x 106 psi is used to make a 1000 lb part for a manned space
helium gas expands in an adiabatic turbine from 2 mpa and 750degc to 0.18 mpa at a rate of 1.5 kgs. assuming constant
Consider a wooden door with a glass window. The door is 5 cm thick and 0.75 m wide by 2 m tall. The window is 0.2 m square and 1 cm thick. The air on one side of the door has a temperature of 23°C and a heat transfer coefficient of 10 W/m2-K. The air..
pressurized water pin 10 bar tin 110 deg c enters the bottom of an l 10-m-long vertical tube of diameter d 100 mm
The electric reheating oven shown in the figure is used to heat a continuous sheet of metal from 25-1000C The metal speed is such that the strip of metal spends 2 hours inside this oven, The sheet thickness is 1cm and the ambient temperature is 25C w..
A Boeing 747 is flying at M = 0.7 at an altitude where the temperature is 223.15 K. The density is 0.41268 kg/m3, and the pressure is 26429.7 Pa. The pressure coefficient on a point of the wing is -2. a) Calculate V0. b) Calculate the pressure (in Pa..
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