Which of the following is not a product of outgassing?
A) water
B) nitrogen
C) oxygen
D) carbon dioxide
E) sulfur dioxide
C
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During an emergency such as the Three Mile Island accident, neutron-absorbing rods are inserted into the reactor. What effect does this have on the thermal energy output of the reactor?
A) Radioactivity immediately ceases, reducing the thermal energy output, but fission keeps creating thermal energy. B) All thermal energy output immediately ceases. C) Thermal energy output is unchanged for a few hours because the chain reaction takes a long time to die out. D) The chain reaction stops, reducing the thermal energy output, but radioactivity keeps creating thermal energy. E) It has no effect on thermal energy output, because nuclear reactors create practically no thermal energy anyway.
Express (4.3 × 106)-1/2 in scientific notation
A) 2.1 × 103 B) 2.1 × 104 C) 2.1 × 10-5 D) 4.8 × 10-4
The velocity of a particle (m = 10 mg, q = ?4.0 ?C) at t = 0 is 20 m/s in the positive x direction. If the particle moves in a uniform electric field of 20 N/C in the positive x direction, what is the particle's speed at t = 5.0 s?
a. 60 m/s b. 20 m/s c. 45 m/s d. 40 m/s e. 70 m/s
The Sun and the Moon have the same angular size. If the Sun is 400 times farther away from the Moon, the Sun must be ________ times the size of the Moon.
A. 400 B. 1/400 C. 4 D. 1/4 E. 4?