One mole of Carbon 12 has a mass of 12.00 grams. What is the mass of a C12 atom?
a. 
b. 
c. 
d. 
e. 
b.
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A comets tails (especially its plasma tail) generally point
A) away from the Sun. B) toward the Sun. C) directly behind the comet along its orbit. D) directly ahead of the comet along its orbit. E) toward the location where the comet's inward trajectory first began.
Suppose that you wish to construct a simple ac generator having an output of 12 V maximum when rotated at 60 Hz. A uniform magnetic field of 0.050 T is available. If the area of the rotating coil is 100 cm2, how many turns do you need?
A) 8 B) 16 C) 32 D) 64 E) 128
A star is observed with a surface temperature of 3,000 K and a luminosity of 105 solar. What is the approximate radius of this star?
A) 30 Msun B) 0.3 Msun C) 3 Msun D) The radius cannot be determined.
If one's hands are being warmed by holding them to one side of a flame, the predominant form of heat transfer is what process?
a. conduction c. convection b. radiation d. vaporization