How is the Reynolds number defined for film condensate flow down a vertical surface?
What will be an ideal response?
The Reynolds number for flow of condensate down a vertical surface is usually
defined as the ratio of 4 times the condensate mass flow per unit width to the
saturated liquid viscosity. This comes from recognizing that the mass flow per
unit width is the average velocity of the liquid times the saturated liquid density
times the condensate film thickness.
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A commercial jet flies above a region of the earth where the earth’s magnetic field points nearly (a) straight upward, which part of the airplane becomes negatively charged?
A. Its nose B. Its tail C. Its top D. Its bottom E. Its left wing F. Its right wing T. (No part becomes charged.)
Consider a Carnot cycle starting at the state of highest pressure and smallest volume. Call the isothermal expansion from this state step 1, the adiabatic expansion which follows step 2, the isothermal compression that then follows step 3, and the adiabatic compression which returns the system to the initial state step 4 . In which steps does the internal energy of the system increase?
a. 1 and 2 b. 3 and 4 c. 1 and 3 d. 2 and 4
Which of the following is NOT true about streaming media?
A. You need very high bandwidth to stream media. B. Frequently it requires a specific media server to transfer data. C. It consumes RAM even when it is not being played. D. Users can choose the file portion they want to play.
Venus' high surface temperature is due to the ________ effect
Fill in the blank(s) with correct word