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A 50-kg iron block and a 20-kg copper block, both initially at 80oC, are dropped into a large lake at 15oC. Thermal equilibrium is established after a while as a result of heat transfer between the blocks and the lake waater. Determine the total entropy change for this process.
You want to know if you should replace the existing machines, which has a Cpk of 1.0. You decide to determine the Cpk for the new machines and make a decision on that basis.
a floating cone with tip angle 60 degrees has. mass of m1300kg is placed in sea water with density rho 1025kgm3. on top
a wad of clay mass m1 with an initial horizontal velocity v1 hits and adheres to the massless rigid bar which supports
five kg of water contained in a piston cylinder assembly expand from an initial state where t1400 degree celsius p1700
assume steady-state one dimensional heat conduction through the symmetric shape shown. assuming that there is no
a closed system undergoes a process in which there is a heat transfer of 100 kj. if the initial specific internal
in a spring mass system a 1kg block is dropped from a height of 1 meter on top of a spring with a spring constant k
a long time ago the specific heat at constant volume of gases cv was determined indirectly from cp measurements and
a cantilever beam with round cross section is loaded at the tip with a transverse force of 1000 lb. the beam is also
3600 lbmhr of air flows through an ideal converging-diverging nozzle. the air enters at a pressure fo 160 psia and a
In 1975 the roof of Montreal's Velodrome, with a weight of 360 kN, was lifted by 10 cm so that it could be centered. How much work was done on the roof by the forces making the lift?
a slab milling operation is performed on the top surface of a steel rectangular workpiece 12.0 in long by 2.5 in wide.
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