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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
the anode and cathode reactions for a lithium-iodide battery are shown in your textbook on page 330. note that an
the system contains a fixed displacement pump with a pressure relief valve set at 1000psi. the system operates 20 hours
an 800 ft ship has a displacement of 37600 tons and the area defined by the waterline is 38000 ft2. a will the ship
an electric wire made of c14500 copper is stretched between two street supports at 20degc so that a stress of 40 mpa is
Find a cylindrical container that is large enough that it takes at least one minute to drain (you may have to create an opening at or near the bottom that gives the right behavior.
pressurized feedwater in a steam power plant is to be heated in an ideal open feedwater heater that operates at a
a 10 kw electric heater is used to heat 2 kg of air contained in an insulated rigid tank from 400 kpa and 50 degc to
319 grams of r-134a initially fill a weighted piston-cylinder device at 60 kpa and -20 c. the device is then heated
What amount must be deposited into a savings account that pays 8% interest if the inflation rate is 10% and you want to set aside enough money to purchase a steel cutting machine ten years after the deposit is made? The current cost of the machine is..
a tube of diameter 50 mm having a surface temperature of 85degc is embedded in the center plane of a concrete slab
methane oxygen and nitrogen flow into an insulated tank. the methane flow is 2 kgs at the 320k. the oxygen flow is 3
the base surface of a cubical furnace 3-m x 3-m x 3-m is surrounded by black surfaces at a 1200 k. specified
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