A Large Collection of Nuclei Are Undergoing Alpha Decay

question 14

Multiple Choice

A large collection of nuclei are undergoing alpha decay.The rate of decay at any instant is proportional to:

• A)the number of undecayed nuclei present at that instant
• B)the time since the decays started
• C)the time remaining before all have decayed
• D)the half-life of the decay
• E)the average time between decays

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Definitions:

Loan

A sum of money borrowed that is expected to be paid back with interest.

Annual Interest Rate

The percentage of interest that will be charged or earned on a sum of money over a one-year period.

Tenth Year-end Deposit

The act of placing funds into a financial account or investment at the end of the tenth year of the account or investment's existence.

Annual Year-end Payments

Payments made at the end of a fiscal year, often related to taxes, dividends, or bonuses.