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Consider the system of Problem 4.92. Initially with no flue gases flowing, the walls (α = 5.5 ×10-7 m2/s) are at a uniform temperature of 25°C. Using the implicit, finite-difference method with a time increment of 1 h, find the temperature distribution in the wall 5, 10, 50, and 100 h after introduction of the flue gases.
Determine the moment of inertia of the drum and the angular acceleration, the time taken, the work done, the average power developed by the driving motor.
1. Air at po 5 1.4 bar, To 5 280 K expands isentropically through a converging nozzle and discharges to the atmosphere at 1 bar. The exit plane area is 0.0013 m2.
An air conditioning company claims to have invented a new air conditioner, which will maintain a room at 22 degrees C while rejecting 105 kj of heat at 42 degrees C. the unit requires 10KJ of work. Is this device believable? Why?
What are the limitations of scanning tunneling microscope in nanofabrication that inhibit its commercial application?
Superimpose a uniform ?ow parallel to the x-axis of 10 m=s and a source at the origin of strength q ¼ 10p m2/s. (a) Write the velocity potential f and stream function c.
a simply supported beam of length 18 ft. is subjected to a trapezoidally distributed load that has a value of 3 kipft
using the values e4.4 in and l38 ft. a column is constructed of a w6x9 rolled steel beam e29x106psi that is fixed at
consider a cross flow of water saturated water that comes at 20c with a velocity of 5 ms on the surface of a
A rigid vessel contains 10 kg of steam. The steam is initially at 10 bar and 300C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings. The surroundings are at a constant temperature of 20C..
a 10 cm2 plate has an electric heater installed that produces a constant heat flux. saturated liquid water at 10 degc
water vapor an ideal gas enters a diffuser expansion device at a pressyre of 0.70 bar a termperature of 160 c and a
a golfer hits a ball giving it a maximum height of 20 m . if the ball lands 130 m away at the level from which he hit
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