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A slab of aluminum 5cm thick initially at 200 deg C is suddenly immersed in a liquid at 70 deg C for which the convective heat transfer coefficient is 525 W/m2K. Determine the temperature at the depth of 12.5mm from one of the faces 1 min after immersion. Also calculate the energy removed per unit area from the plate during 1 min of immersion. Take density = 2700Kg/m3, c= 09 Kj/KgK, k= 215 W/mK, alpha = 8.4x 10-5 m2/s.
a 45 kg machine is mounted on a spring of stiffness 8e5 nm. when the machine operates at 32 hz the machines steady
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
create the main window shown here. you may use any layout manager or you may lay the components out manually.when a
Careful measurements indicate that the fixed ends separate by 0.20 mm. What loads are exerted on the ends of the tube, and what are the resultant stresses?
refrigerant-134a is throttled from the saturated liquid state at 700kpa to a pressure of 160kpa. determine the
The tank in Fig. 4.55 has a view port in the inclined side. 65° Compute the magnitude of the resultant force on the panel. Show the resultant force on the door clearly and dimension its location.
The inner and outer surfaces of a 5-m x 6-m brick wall of thickness 30 cm and thermal conductivity 0.69 W/m · °C are maintained at temperatures of 20°C and 5°C, respectively. Determine the rate of heat transfer through the wall, in W.
two refrigerators are arranged in series. one of them receives 300 kjcycle from a reservoir at 300 k. the heat
there is flow between two plates as shown in the schematic. the bottom plate is stationary. the top plate is moving at
air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar 280 k. the
Determine the coefficient of kinetic friction µ,k be- tween the cable and the pipes, the maximum ten- sion T in the cable between the pipes, and the sag h in the cable.
One side of a mercury manometer is connected to the top of frictionless piston-cylinder storage tank containing 1500 liters of oil, the other side is open to the atmosphere. The difference in the height of the column of mercury in the manometer is 90..
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