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Two forces, each of magnitude P, are applied to the wrench. The diameter of the steel shaft AB is 15mm. Determine the largest allowable value of P if the shear stress in the shaft is not to exceed 120 MPa and its angle of twist is limited to 5 degrees. Use G = 80 GPa for steel.
a small sphere of reference-grade iron with a specific heat of 447 jkgk and a mass of 0.515 kg is suddenly immersed in
a steam power plant operating in a rakine cycle has saturated vapor at 600 lbfin2 leaving the boiler. the turbine
Calculate spring stiffness for which the oscillator becomes unstable (gravity in the negative y direction) verify with SW Simulation (study 1)
an engine operates on an air-standard brayton cycle with reheat. the work required to compress the air in one stage
Calculate the concentration (in weight percent) of molybdenum that must be added to tungsten to yield an alloy that contains 1.51 x 1022 Mo atoms per cubic centimeter.
a certain indutrial process requires a steady stream of saturated vapor steam at 200 kpa at the rate of 2 kgs. there
consider a non-ideal vapor-compression cycle where refrigerant 134a flows at a rate of 0.05 kgs. the refrigerant enters
r-134a fills a 0.1 m3 capsule at 20oc 200 kpa. it is placed in a deep freezer where it is cooled to -10oc. the deep
a small steel cylinder is used as a pressure vessel for a paint gun. the label says 24 grams co2 filled. assume the
consider a rigid tank of volume 15 m3 . this tank is connected to a steam supply line. the tank is initially evacuated.
1. for each of the two proposed replacement presses determinenbspa. initial investment.nbspb. operating cash inflows.
a helical spring of stiffness k is cut into two halves and a mass m is connected to the twonbsphalves as shown below
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