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A block of weight W is suspended from a 25 inch long cord and two springs of which the unstretched lengths are 22.5 inches. knowing that the constants of the springs are kAB=9 lb/in, and kAD=3 lb/in., determine the tension in the cord and the weight of the block.
question 1 entropya in a coal fired thermal power station indicate where the exergy contained in the coal is destroyed.
in a close stationary system 2 kg of argon is heated from 20oc to 120oc. determine the amount of heat transfer when
a pistoncylinder contains water with quality 75 at 200 kpa. slow expansion is performed while there is heat transfer
a 9 m3 tank has two sections separated by a membrane both of which contain nitrogen gas. the nitrogen in section a has
a pressure vessel having a volume of 30 ft3 contains saturated steam at 500 f. the vessel initially contains 50 vapor
steam at 3 mpa and 400 degc is expanded to 30 kpa in an adiabatic turbine with an isentropic efficiency of 92 percent.
A rigid bar of mass m and length L is released from rest in the horizontal position. What is the rod's angular velocity when it has rotated through 90°?
steam at 25 psia and 250degf is condensed at its saturation temperature. what is the temperature of the condensate? how
compressed liquid water at 42 c and 8 mpa steadily flows into a boiler and exits as a saturated vapor at 8 mpa. the
When these stops occur, it takes an average of 10.0 min to diagnose the problem and make repairs. Determine (a) line efficiency and (b) average actual production rate.
a furnace is hsaped like a long equilateral-triangular duct where the width of each side is 2 m. heat is supplied from
suppose that 1000 is deposited into an account that pays 5 intrest per year. at the end of each year th amount in the
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