If a 20-MeV Neutron Released in a Fission Reaction Loses Half Its

question 130

Multiple Choice

If a 2.0-MeV neutron released in a fission reaction loses half its kinetic energy in each moderator collision,how many collisions are needed to reduce its kinetic energy to 1/25 eV?

• A)6
• B)18
• C)26
• D)30
• E)4

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Definitions:

Aggregate Demand

The total demand for all goods and services in an economy at a given overall price level and in a given time period.

Keynesians

Economists who follow the theories of John Maynard Keynes, emphasizing the need for government intervention to manage economic cycles.

Supply-Siders

Economics theorists who believe that reducing tax rates and deregulation can stimulate economic growth by increasing supply.

Marginal Tax Rates

The rate at which an additional dollar of income is taxed, indicating the tax impact on your next dollar earned.