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.

Calculate population size using the finite population correction factor.

Utilize the formula of the standard error of the mean to calculate probabilities related to sample means from infinite populations.

Describe the properties of the sampling distribution of the sample mean.

Determine the relationship between sample size, standard error, and the distribution shape of the sample mean.

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