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A timber beam is subjected to a maximum bending moment of 2600 N⋅m. The cross section of the beam is 100 mm by 150 mm. The 150 mm side is oriented vertically.
(a) Calculate the maximum bending stress.
(b) Calculate the bending stress 25 mm below the top surface.
an insulated rigid-wall tank contains air at 20 c and 2 bar. a paddle wheel located in the tank does work on the air in
An old gas turbine has an efficiency of 21 percent and develops a power output of 6000 kW. Determine the fuel consumption rate of this gas turbine, in L/min, if the fuel has a heating value of 42,000 kJ/kg and a density of 0.8 g/cm3.
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 200 lbf/in^2 with a quality of 80%. The mixture is heated and expands at constant pressure until a final temperature of 480 F is reached. Determine the work for the proces..
air flows on both sides of a counterflow heat exchanger operating at steady state with a mass flow rate of 1 lbs on
If the heat transfer factor is 0.85 and the melting factor is 0.55 for a welding process, how much heat must be generated at the welding source to accomplish the weld?
the jeep has a weight of 2510lb and an engine which transmits a power of 100 hp to all the wheels. assuming the wheels
What is the di¤erence between solid-state phase transformations such as the eutectoid reaction and the martensitic phase transformation?
If the surface temperature of the tube is 120°C, determine the average convection heat transfer coefficient of the air and the rate of water evaporation in kg/h.
an elevator is created by using a hose hanging from the top of a 10 m building. the hose is diverted into 4 jets at the
a long cylinder pressure vessel with closed ends has an internal pressure of 3 mpa. calculate the hoop stress sigma
A piston-cylinder assembly undergoes a cycle consisting of the following three processes: Compression with constant internal energy. Constant-pressure expansion with W_3-1=12.5 kJ
Write code to calculate and plot (on screen) the Fourier Transform magnitude for each of the ten individual digits. Each number is signalled using two simultaneous tones. Note that the sample rate is 8kHz. Make sure your frequency axis is correctl..
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