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Consider fully developed Couette flow-flow between two infinite parallel plates separated by distance h, with thetop plate moving and the bottom plate stationary as illustrated in Fig. P7-56. The flow is steady, incompressible, and two-dimensional in the xy-plane. Use the method of repeating variables to generate a dimensionless relationship for the xcomponent of fluid velocity u as a function of fluid viscosity µ, top plate speed V, distance h, fluid density ?, anddistance ?, Show all your work
A long aluminium cylinder 50cm in diameter is initially at a uniform temperature of 200°C. It is suddenly subjected to a temperature of 70°C and h = 535W/m2K. How long will it take for the surface temperature to reach 100°C.?
suppose that a nuclear plant generates heat in the amount of 2 x 107 j from its fuel rods at a temperature of 1200c and
a 45-g bullet is fired with a velocity of 600 ms into a wooden block which rests against a solid vertical wall. knowing
Characterize the three basic materials (metals, ceramics and polymers) in regarding to modulus of elasticity, strength, ductility and coefficient of thermal expansion.
a heat engine supposedly receives 500 kjs of heat from an 1100-k source and rejects 300 kjs to a low-temperature sink
you have a bevel gear and shaft and you have to find the maximum load that can be applied on it. what type of
what is the reason for the system? -to increase the air pressure from 100 to 1200 kpa design uses dual compressors to
A system contains a substance that is initially at 100 °C and 1 MPa and it later at 0 °C and 100 kPa. Determine the change in specific enthalpy for the process if the unknown substance is: a) liquid kerosene, b) helium gas (He), c) solid aluminium (A..
the probability of a memory chip from a production line being defective is 0.04. find the probability that in a sample
A closed system contains 2 kg of Nitrogen at 27 C initially. The gas is heated to a final temperature of 277 C. Determine the total amount of heat required when the heat addition is done in.
A rigid tank contains 2 kmol of N2 and 6 kmol of CH4 gases at 200 K and 12 MPa. Estimate the volume of the tank using Amagot’s Law and the generalized compressibility chart
two tanks a and b are connected by a short section of pipe with a valve that is initially closed. both tanks are
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