Two Radioactive Isotopes,X and Y,both Decay to Stable Products

question 135

Multiple Choice

Two radioactive isotopes,X and Y,both decay to stable products.The half-life of X is about a day,while that of Y is about a week.Suppose a radioactive sample consists of a mixture of these two nuclides.If the mixture is such that the activities arising from X and Y are initially equal,then a few days later the activity of the sample will be due

• A)predominantly to Y.
• B)predominantly to X.
• C)entirely to Y.
• D)to X and Y equally.

---

Definitions:

Permanent Investment

Investments a company intends to hold for a long duration, typically exceeding one year, for earning dividends or interest income.

Owner's Equity

The total value remaining in a business after all liabilities are subtracted from assets; also known as shareholders' equity.

Owner's Equity

The residual interest in the assets of the entity after deducting liabilities, representing the owner's claim against the company's assets.

Additional Investments

Funds injected into a business by its owners or shareholders to provide additional capital for operations or expansion.