Water is to be condensed at 1 atmosphere pressure in a compact heat exchanger having vertical stainless steel plates at 40ºC. Plot the condensation boundary layer thickness flowing down the vertical surface as a function of the distance down the plate, assuming laminar flow. At what point would you assume the condensate flow to become turbulent?
What will be an ideal response?
Assuming laminar flow of condensate down a vertical surface, Equation 10-34 may be
used to predict the condensate thickness.
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at speed 
If the boy rides at the same radius 
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Two transparent materials are in contact. The one on the left has a lower index of refraction than the one on the right (nL A. The transmitted wave is unaffected and the reflected wave in inverted.
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The figure shows the position of an object as a function of time, with all numbers accurate to two significant figures. Between time and time (a) what is the average speed of the object? (b) what is the average velocity of the object?
What will be an ideal response?