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1 kg of air enclosed in a rigid container is initially at 4.8 bar and 150 °C. The container is heated until the temperature is 200°C. Calculate the pressure of the air finally and the heat supplied during the process.
you decide to do a demonstration on a rooftop that requires water. there isnt a handy faucet so you put a barrel of
A particle P, which can slide freely on the wire, is released from rest at the point (a, 0, 2πb). Find the speed of P when it reaches the point (a, 0, 0) and the time taken for it to do so.
to defog the rear window of an automobile a very thin transparent heating element is attached to the inner surface of
The heat exchanger is at steady state, and there is no appreciable heat transfer from its outer surface. Neglecting kinetic and potential nergy effects, determine the mass flow rate of the ammonia, in kg/s, and the rate of entropy production withi..
Air expands through a turbine operating at steady state on a test stand. At the inlet, p=50 psia, T=1500 degrees R, and at the exit , p=14.5 psi. The volume flow rate of air entering the turbine is 2000 ft^3/min, and the power developed is measured a..
the 22 kg block is towed up the ramp of the 43kg cart using the motor mounted on the side of the cartif the motor winds
a piston-cylinder device contains 12 kg of saturated vapor r-134a at 2.4 bar state 1. a 110 v electric source supplies
calculate the number of vacancies per cubic meter in some metal at 688degc. the energy for vacancy formation is 0.87
consider two masses m1 and m2 that are connected by a rope over a pulley. the masses will accelerate in a direction
develop the maxwell and kelvin-voigt relations. creep is deformation under constant stress while stress relaxation is
a 15 kg block b is being pulled along a smooth surface by a winch a. assume the winch is a 10 kg disc with a constant
The acceleration due to gravity at sea level is g = 9.81 m/s2 . What is the person"s weight at sea level? The acceleration due to gravity on the moon is g = 1.62 m/s2 . What would the person weigh on the moon?
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