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A band brake is used to control the speed of a flywheel as shown. The coefficients of friction are µs = 0.30 and µk = 0.25. Determine the magnitude of the couple being applied to the flywheel, knowing that P = 45 N and that the flywheel is rotating counterclockwise at a constant speed.
Suggest an appropriate material for each of the following applications, and, if necessary, recommend corrosion prevention measures that should be taken. Justify your suggestions.
The welded handle and stand on the tank weigh 1 lbs (combined) and valve on the tank weighs 1.5 lbs and has an exit area of 1 cm^2 . What is the wall thickness of the propane tank in mm? what is the inner volume of the propane tank in mL and gallons..
on an assembly line that fills 8-ounce cans a can will be rejected if its weight is less than 7.90 ounces. in a large
consider a carnot refrigeration cycle with a working fluid of r-134a operating between temperatures of -10oc and 20oc.
A small hydroelectric power plant produces electrical power at a rate of 30 kW. The plant utilizes a stream of water that drops 40 m from a lake to the turbine and flows at a rate of 100 kg/s. What is the efficiency of the turbine-generator?
The fibers are produced by chemical vapor deposition of fibers onto fine tungsten wires of dW=10µm. The final wire diameter is dB=75µm. The boron coated wires are then added to an aluminum matrix
Design a single-cylinder atmospheric engine capable of lifting a mass of 1000 kg to a height of three meters. Assume reasonable values of cylinder temperature and pressure after combustion.
a timber company wishes to increases sales of timber by supplying log cabin kits that can be assemed and used as
a rigid container of volume v 01 m3 contains 1 kg of water. initially the system is at a temperature of t1 30c.a what
Air enters the turbine of a gas turbine at 1200 kPa and 1200 K, and expands to two stages. Between the stages, the air is reheated at a constant pressure of 350 kPa to 1200 K. The expansion through each turbine stage is isentropic.
boxes come off a conveyor system at a velocity of 8 ms and slide across a horizontal frictionless surface into a
a 25 ft long standard steel steam pipe is installed at 60 degrees f. the pipe temperature increase to 220 degree f when
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