Which of the following statements best describes a critical mass?

A. A critical mass is the minimum amount of material that will undergo nuclear detonation.
B. A critical mass cannot be assembled from smaller, noncritical pieces of material.
C. A critical mass is the minimum amount of material that will spontaneously undergo a chain reaction.
D. A critical mass will detonate when it is separated into subcritical pieces.
E. none of the above


Answer: A

Environmental & Atmospheric Sciences

You might also like to view...

In a battery, the following oxidation-reduction reaction is taking place: Mn2O3 + ZnO ? 2 MnO2 + Zn What is undergoing reduction as written?

A. ZnO B. Zn C. MnO2 D. Mn2O3 E. none of the above

Environmental & Atmospheric Sciences

A major factor in human population increase in the last 200 years is the emergence of early and modern agriculture

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Land costs generally decline with distance from the central city

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Calculate the vertical exaggeration of your profile in problem. Use a ruler to compare the horizontal (map) scale with the vertical scale of the graph.





(a) Horizontal Scale: 1 inch = ____________ feet
(b) Vertical Scale: 1 inch = ____________ feet
(c) Vertical Exaggeration = ____________ x

Environmental & Atmospheric Sciences