The whiteness of clouds is due mainly to
A) scattering.
B) reflection.
C) polarization.
D) water prisms.
Answer: B
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Derive the general energy equation for conduction heat transfer through a homogeneous, isotropic media in cylindrical coordinates, Equation 2-19.
Fluid Flow: When you blow some air above a paper strip, the paper rises. This happens because
A. the air above the paper moves faster and the pressure is higher. B. the air above the paper moves faster and the pressure is lower. C. the air above the paper moves faster and the pressure remains constant. D. the air above the paper moves slower and the pressure is higher. E. the air above the paper moves slower and the pressure is lower.
The gas in a perfectly insulated system does work at a rate of At what rate is the internal (thermal) energy of the gas changing?
A) -13 W B) 13 W C) 0.00 W D) 6.5 W
A metallic object has a net charge on it. For steady state conditions, the excess charge is
A. only on the surface. B. on the bottom of the object. C. on the north side of the object. D. spread evenly throughout the object. E. in the center of the object.