A "Critical Mass" Is Needed for a Chain Reaction Because

question 23

Multiple Choice

A "critical mass" is needed for a chain reaction because

• A) if the mass is too small the temperature achieved during fission will be too low to sustain the reaction.
• B) if the mass is too small, there will not be enough uranium to start the reaction.
• C) if the mass is too large, the temperature will get too high and the entire mass will blow up without fissioning.
• D) if the mass is too large, the density will be too high to sustain a chain reaction.
• E) if the mass is too small, too many neutrons will leak out without causing fission.

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An accounting entry that is made at the beginning of an accounting period to reverse or cancel out adjusting entries made at the end of the previous accounting period.

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