When a hydrogen bomb explodes, hydrogen fuses to form helium. According to Einstein's mass-energy equivalence [that is, according to E=mc2], does this result in an change in the total mass of the material?
A) Yes, the mass increases, but by such a small amount that it would be impossible to measure it.
B) Yes, the mass increases, and by a measurable amount.
C) Yes, the mass decreases, and by a measurable amount.
D) Yes, the mass decreases, but by such a small amount that it would be impossible to measure it.
E) No, the mass remains exactly the same.
C
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Comets are not actually members of the solar system, but have been captured by the Sun
Indicate whether the statement is true or false
A certain brand of hot dog cooker applies a potential difference (120 V) to opposite ends of the hot dog and cooks by means of the joule heat produced. If 60 kJ is needed to cook each hot dog, what current is needed to cook four hot dogs simultaneously in 3.0 min?
a. 11 A b. 2.8 A c. 8.3 A d. 2.1 A e. 3.6 A