The reaction 2H + 2H ? 3H + 1H releases 4.03 MeV of energy. If one kilogram of deuterium were made to go through this reaction, how much energy would be produced?
A)
9.7 × 107 J
B)
9.7 × 1013 J
C)
1.9 × 107 J
D)
1.9 × 1014 J
E)
1.9 × 1011 J
B
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Ferromagnetic materials with a large _________are hard magnetic materials.
Fill in the blank(s) with the appropriate word(s).
What is Hawking radiation?
A) a hypothesized way for black holes to gradually shrink in mass B) a type of high-energy radiation that comes from inside a black hole's event horizon C) a type of radiation coming from objects supported by degeneracy pressure D) a type of radiation that we have detected so far only with infrared telescopes in space
The Sun is not seen as yellow-green because
A) it is not yellow-green. B) it is small part of a mixture of other colors in sunlight. C) its brightness is only slightly greater than the other colors. D) our vision is not adapted to yellow-green.
A rectangular wire loop (length = 60 cm, width = 40 cm) lies completely within a perpendicular and uniform magnetic field of magnitude of 0.5 T. If the length of the loop starts increasing at a rate of 20 mm/s at time t = 0, while the width is decreasing at the same rate, what is the magnitude of the induced emf at time t = 4.0 s?
a. 6.8 mV b. 5.2 mV c. 3.6 mV d. 8.4 mV e. 10 mV