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In a cold winter day, wind blows over the wall of a house at 40 km/h. The outside air temperature is reported to be -7°C. The wall is 8 m long and 5 m height whose surface temperature is 10 °C. (a) Determine the rate of heat loss from the surface of the wall due to the convection; (b) Repeat part (a) for wind velocity varying from 10 km/h to 100 km/h, and plot the rate of heat loss versus the wind velocity; (c) Repeat part (b) for outdoor temperature of 0°C and -10°C, and show the results in a single graph.
a stone is thrown vertically upward from a point on a bridge located 40m above the water. knowing that it strikes the
Coefficient Reaction, The removal efficiency of a reactor tank is 73-percent and its residence time is 28.5s
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Air enters the compressor of a gas-turbine plant at ambient conditions of 100 kPa and 32 °C with a low velocity and exits at 1 MPa and 367 °C with a velocity of 6 x 10^3 m/min. The compressor is cooled at a rate of 1800 kJ/min, and the power input to..
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The kinetic coefficients of friction between the 5-kg crates A and B and the inclined surface are 0.1 and 0.4, respectively. The coefficient of restitution between the crates is e = 0.8. If the crates are released from rest in the positions shown, wh..
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