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Water at 290 K flows at 1 m/s along a flat plate. For x< 10 cm, Ts=290 K, whereas for 10<x< 30 cm, Ts=310 K. Calculate the local heat flux at x= 0.3 m and compare your result with the heat flux if the plate were isothermal at 310 K.
The support below will be used to attach a climbing rope for young children at the point of load P. It is constructed using two 2-in. by 4-in. pieces of wood braced as shown. If the allowable bending stress is 600 psi, determine the largest load P th..
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
cast aluminum products often contain gas porosity and shrinkage cavities which can undermine the integrity of these
Consider a piston-cylinder system with an initial volume of 0.04 m3 at 200 kPa. Calculate the work being carried out to increase the volume to 0.1 m3 for each of the following processes
a dam in western north carolina takes a 30 m3 s flow of water from the nantahala river and diverts it to a turbine
an opaque horizontal plate has a thickness of l21 mm and thermal conductivity k25 wmk. water flows adjacent to the
Consider a car having a frontal are of 2.0m^2 with a drag coefficient of 0.35. The mass of the car is 1250kg and the rolling resistance is 1.0% of the weight of the car. At what speed does the aerodynamic drag first exceed the rolling resistance.
the pressure drop needed to force water through a 1-in.-diameter pipe the pipe is on a 20 degree hill is 0.76 psi for
a 2.7 cm diameter rod consists of three cylindrical segments placed end to end in intimate contact aligned aong a
The vapour has 5 K of superheat at entry to the compressor.In each case calculate the C.O.P.(ref.) and the refrigerating effect per kg. What would be the C.O.P.(ref.) of a reversed Carnot cycle operating between the same saturation temperatures?
1 air has a humidity of 0.04 lbs h2o lb bda and a wet bulb temperature of 105of. what is the temperature of the air?2
a gate in the shape of a quarter cylinder hinged at a and sealed at b is 3 m wide. the bottom of the gate is 4.5 m
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