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A brass rod is stress-free at room temperature (20 degrees Celsius). It is then heated up but prevented from lengthening at its ends by external forces. At what temperature does the stress in the rod reach 172 MPa? Assume the modulus of elasticity is 100 GPa, and the linear coefficient of thermal expansion is 20e6/degC
cylinder a and cylinder b contain 0.07 grams of helium and 0.4 grams of oxygen respectively. each of these gases is
A gear blank has been successfully hot forged on a mechanical press in a closed die. At the beginning of a new production run
5 lbm of air is compressed in a piston cylinder assembly from 1 bar 300k to 5 bar according to a polytropic process
a particulate monitor has a power supply consisting of two batteries in parallel. either battery is adequate to
a crate of weight w550 lb has been attached to a pickup truck by a rope whose tensile strength is tmax350 lb. if the
the hot water needs of a household are met by a 60 l electric water heater whose heaters are rated at 1.6 kw. the hot
water vapor enters a valve with a mass flow rate of 2 kgs at a temperature of 320 degrees celsius and a pressure of 60
methane at 6 mpa and 245 k is heated at a constant pressure until its volume has increased by 90 percent. determine the
air contained within a piston-cylinder assembly undergoes three processes in series a. process 1-2 compression at
a cubic tank 1m3 is filled with air at 280k and 100 kpa. it is fitted with a relief valve that will vent at 600 kpa.
air flows in a round pipe at a rate of 0.015 lbmsec. the air enters the pipe at a temperature 76.8 of and a pressure
Using the required parameters for a typical large size car* and an appropriate frontal Quarter-Car model.
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