Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following situation?
heat traveling through the ceiling from your bedroom to the attic.
a) feeling a metal wire get warmer as you roast a marshmallow over a fire.
b) warm air rising in a room where the air is moving.
c) the sun warming up the roof on a house.
d) cold water sinking in a pot of water being warmed up on the stove.
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The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.
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Based on the principles of convection, conduction and thermal radiation, which scenario below is mos...
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