The Mass of a Visual Binary Pair of Stars Can

question 51

Multiple Choice

The mass of a visual binary pair of stars can be obtained from

• A) the time in years for them to orbit one another.
• B) the size of their orbit.
• C) their apparent magnitudes.
• D) both A and B

---

Definitions:

Deductible IRA Contribution

A contribution to an Individual Retirement Account (IRA) for which the taxpayer can claim a tax deduction, subject to certain conditions and limits.

Pension Plan

A retirement plan funded by employers or employees, or both, paying out a fixed sum to retirees, often based on salary and years of service.

AGI

Short for Adjusted Gross Income; it is your gross income after adjustments and deductions, crucial for tax calculations.

Deductible IRA Contribution

A contribution to an Individual Retirement Account that can be subtracted from gross income, reducing taxable income.