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A 50 kg copper block initially at 350 degree C is quenched in a closed, rigid insulated tank containing 120 L of liquid water at 25 degree C. Calculate the entropy change (kJ/K) of copper block. Determine the entropy change (kJ/K) of liquid water.
a wire of radius r length l and initial temperature ti is cooled by a fluid of temperature tf at time t0. the heat
a concentric tube heat exchanger uses water which is available at 15?c to cool ethylene glycol from 100 to 60c. the
an aluminum cube initially at 400oc with a dimension of 2 cm on each side is cooled using 30oc air with a convection
at 25 degres c an aqueouse solution containing 35.0 wt h2so4 has a specific gravity of 1.2563. a quantity of the 35
the following linear failure envelopes for a rock mass are givenintact rockfriction angle 350cohesion 900 psitension
a pressure cooker cooks much faster than an ordinary pan by maintaining a higher pressure and temperature inside. the
a car tows a 400kg block up a 45 degree incline. the coefficients of static and kinetic friction are 0.6 and 0.4. the
the power output of an adiabatic steam turbine is 5.5 mw. at the inlet p 2.0 mpa and t 435 degc. the steam enters the
Determine the total heat transfer and the total work(kj). and show the T-V diagram.
an airplane weighing 5000 lb is flying at standard sea level with a velocity of 200 mph. at this velocity the ld ratio
Calculate spring stiffness for which the oscillator becomes unstable (gravity in the negative y direction) verify with SW Simulation (study 1)
a 400 gallon cylindrical tank is filled with water. a valve is opened at the bottom of the tank. a five- gallon jug
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