Multiple Choice
Each kilogram of hydrogen that fuses into helium releases about 6 × 1014 Joules of energy.How many tons of hydrogen are fused each second to power a massive main-sequence star with a luminosity of 100 L⨀? Note that 1 L⨀ = 4 × 1026 Joule/second and 1 ton = 103 kg.
A) 2 × 106 tons
B) 7 × 107 tons
C) 2 × 109 tons
D) 7 × 1010 tons
E) 2 × 1011 tons
Correct Answer:

Verified
Correct Answer:
Verified
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