In sublimation the saturation region involves solid and vapor phases. Where would you expect convection to be dominant, in the saturated solid or the saturated vapor?
What will be an ideal response?
Vapors tend to be two to five orders of magnitude less dense than solids so that convection heat transfer is much greater in saturated solids than in saturated vapors.
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Analog sound signals are produced by
A) phonograph records. B) CDs. C) DVDs. D) all of the above E) none of the above
A camera lens has a focal length of 50.0 mm and an aperture setting of 4.00. What is the aperture diameter of this lens?
A) 12.5 mm B) 10.1 mm C) 13.6 mm D) 14.2 mm E) 15.0 mm
Give the dimensions and shape of the Galactic disk
What will be an ideal response?
A cup that is 6.0 cm tall is in front of a concave lens. The image of the cup is 2.5 cm tall and 7.5 cm from the lens. What is the focal length of the lens?
A) -6.0 cm B) -7.5 cm C) -13 cm D) +18 cm E) +6.0 cm