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On a summer day the air temperature is 27°C and the relative humidity is 30%. Water evaporates from the surface of a lake at a rate of 0.10 kg/h per square meter of water surface area. The temperature of the water is also 27°C. Determine the value of the convection mass transfer coefficient.
an inventor claims to have developed a device that takes an air stream at 20degc 274 kpa and produces two separate
A laminated thick-walled cylinder was fabricated by shrinking a steel (E=200 GPa and nu=0.03) sleeve having an inside diameter of 199.800mm and an outside diameter of 300mm onto a steel tube with an inside diameter of 100mm and an outside diameter of..
question helpquestion 1 determine the headwater depth of a 1000 mm high by 1500mm wide concrete box culvert operating
A frictionless piston-cylinder contains 3.0 kg of H2O and is initially at 300 kPa. The initial volume is 1.0 m3. The water is heated until the temperature is 300 C. If the volume within the system reaches 1.5 m3, the piston hits a set of stops and is..
a 75-g ball is projected from a height of 1.6m with a horizontal velocity of 2ms and bounces from a 400g smooth plate
Calculate the value of critical radius ratio for coordination number of 4 in an ionic compound (that is, convince yourself by calculation that the value given in the text is correct.) (b) Repeat for a coordination number of 8. Sketch a face centered ..
A collar B of weght W can move freely along thevertical rod. The constant of the spring is k and the spring is unstretched when theta=0. Derive an equation in W thrta k and l that must be satisfied when h collar is in equilibrium.
If the bar is subjected to centric forces of magnitude P = 30 kN and knowing that EA = 70 GPa and EB = 105 GPa, determine the normal stress (a) in the aluminum layers, (b) in the brass layer.
saturated liquid water is heated at constant pressure in a steady-flow device until it is a saturated vapor. calculate
Calculate the heat flux in the radial direction at any time and calculate the heat flow per length at r=r0 at a time 0f 0.05 s.
a power cycle operates between a high temperature reservoir at th k and a low temperature reservoir at tc 280 k. at
an adiabatic turbine expands steam from 500 c and 4000 kpa to 200 c and 300 kpa. the tubrine geneateds 750 kw of power.
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