If You Discovered a Planet Orbiting Another Star,and the Planet

question 57

Multiple Choice

If you discovered a planet orbiting another star,and the planet had an orbital period of 2 years and a semimajor axis of 1 AU,what would be the mass of its parent star? You can assume the planet's mass is much less than the star's mass.

• A)0.25 M_⨀
• B)0.5 M_⨀
• C)1.0 M_⨀
• D)1.25 M_⨀
• E)2.0 M_⨀

---

Definitions:

African Americans

A racial or ethnic group in the United States with ancestry from any of the black racial groups of Africa.

Efficiency Wages

Efficiency wages are higher-than-market wages paid by employers to increase worker productivity, morale, and retention, reducing turnover and shirking.

Less Pleasant

A term that could describe a job or task seen as undesirable or lower in terms of comfort and enjoyment.

Marginal Productivity Theory

An economic theory stating that the amount of pay or wages a worker receives is directly related to their contribution to the output or productivity.