Which equation represents the overall nuclear fusion process of the Sun?
a. 4H => 8He + energy
b. 2 1H => 1He + energy
c. 4 1H => 2 1He – energy
d. 4 1H => 4He + energy
e. 4 4H => 4He – energy
d
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On the main sequence on an H-R diagram, our Sun lies at about ________
Fill in the blank(s) with correct word
Power: A series RLC circuit has a 100-? resistor, 2.0-mH inductor and a 4.0-?F capacitor connected across a 120-V rms ac source at 1000/? Hz. What is the power factor of this circuit?
A. 0.54 B. 0.64 C. 0.74 D. 0.84 E. 0.94
Type II supernova spectra are poor in hydrogen because stars that explode this way use up all their hydrogen before they leave the main sequence
Indicate whether the statement is true or false
The idea of continental drift was not generally accepted when Wegener proposed it because
a. the Bible did not support it. b. Wegener was a meteorologist, not a geologist. c. Wegener was not well known. d. no satisfactory mechanism was proposed.