The accident at Three Mile Island began when
A) the moderator malfunctioned so that the reaction got out of control.
B) a water pump failed.
C) the control rods didn't insert properly.
D) the pressurizer ruptured [i.e., broke open] and there was no backup pressurizer to replace it.
E) the heat exchanger failed to operate properly.
B
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The electron
a. is an absolutely stable particle. b. decays via the weak interaction. c. has zero mass. d. is a lepton.
The purchase by a power company of an area of ground on which to build a power plant is an example of the tragedy of the commons
What will be an ideal response?
The distance of the Earth from the Sun is 93,000,000 miles. If there are 3.15 × 10^7 s in one year, find the speed of the Earth in its orbit about the Sun
a. 9.28 miles/s c. 27.9 miles/s b. 18.6 miles/s d. 37.2 miles/s
Which blurs our Earth-based view of celestial objects?
a. the Sun b. the Moon c. Earth's atmosphere