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A piston/cylinder arrangement is filled with helium gas. The gas is compressed with a polytropic process (with n=k). The initial condition is 200 kPa, 200 K. The final pressure is 1.4 MPa. Determine the work and the heat transfer for the process (both in kJ/kg), assuming ideal gas behavior.
a fire hose needs to deliver 25 ls of water to a maximum height of 50 m above ground level. a find the stagnation
It is necessary to design a square-section composite bar that will withstand an applied load without deflecting more than a specified amount.The design specification for the bar, including its dimensions and loading criteria, is given below.
a crystalline grain of iron in a steel plate is situated in such a way that a tensile stress of 100 mpa 14.5 ksi is
Evaluate thermal efficiency of the cycle
Plot the total mass in the tank, in kg, and the amount of heat transfer, in kJ, versus the final quality x ranging from 0.2 to 1.0
the area of a rectangle with a perimeter of 200 cm is modeled by a function a 100l - l2 where l is the length of the
a sealed piston-cylinder assembly contains 3 lbm of water. the water is initially at p1 40 psia and t1 300degf. the
water flows from a storage tank through a horizontal 6-inch pipe cast iron and discharges water 20 degrees celsius into
a particle is moving along a straight line such that when it is at the origin it has a velocity of 8 ms part a if it
two spinning discs have the same angular momentum, but disk 1 has more kinetic energy than disk 2. Which one has the bigger moment of inertia - explain your reasoning?
consider two very large parallel plates. the bottom plate is warmer than the top plate which is held at a constant
In an ore minig operation, a bucket full of ore is suspended from a traveling crane which moves slowly along a stationary bridge. The bucket is to swing no more than 4m horizontally when the crane is brought to a sudden stop. Determine the maximum..
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