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A flat surface 4m wide and 10m long is exposed to air flow parrallel to its long side. The speed of the air is 55 km/h and the temperature is 5C. If the temp of the surface is constant at 12C, calculate the heat loss from the surface. Air properties at the film temperature are v= 1.4x10^-5 m^2/s, k= 0.0243 W/(mk) Pr=.0734
a triangular field with vertices opq has sides op=402m,pq=388m,and qo=254m. find the perpendicular distance from the vertex p to the opposite side.
using the kelvin - planck statement of the second law of thermodynamics demostrate the following corollariesa the
1. steam is contained in a closed rigid container with a volume of 1 m3. initially the pressure and temperature of the
a closed system undergoes a reversible process from 220 k to 440 k with the heat transferred per degree of temperature
water at a flow of m .215 kgs is cooled from 82 degrees c to 42 degrees c by passing it though a thin-walled tube of
the aerodynamic resistance to motion of a car is nearly proportional to the square of its velocity. additional friction
air enters an adiabatic compressor at 20 degc and 100 kpa at a rate of 2 kgs and exits at 700 kpa. if the power input
compute the torsional shear stress in a hallow shaft with an outside diameter of 40 mm and an inside diameter of 30 mm
a quantity of air undergoes a thermodynamic cycle consisting of three internally reversible processes in series process
If the chest is completely filled with ice, calculate the time for the ice to completely melt. State your assumptions. The enthalpy of fusion for water is 330 kJ/kg.
determine the maximum power that can be transmitted thru a stepped shaft rotating at 60 hz. knowing the radius of the
the 6 x 12 in timber beam has been strengthened by bolting to it thenbsp5 x ? in steel reinforcement shown. the modulus
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