You Are the Science Officer on a Visit to a Distant

question 7

Multiple Choice

You are the science officer on a visit to a distant solar system.Prior to landing on a planet you measure its diameter to be 1.8 × 10⁷ m and its rotation period to be 22.3 hours.You have previously determined that the planet orbits 1.8 × 10¹¹ m from its star with a period of 402 earth days.Once on the surface you find that the acceleration due to gravity is 59.7 m/s².What are the mass of (a) the planet and (b) the star? (G = 6.67 × 10^-11 N • m²/kg².)

• A) (a) 7.2 kg × 10²⁵ kg, (b) 2.9 kg × 10³⁰ kg
• B) (a) 1.3 kg × 10²⁶ kg, (b) 2.9 kg × 10³⁰ kg
• C) (a) 7.2 kg × 10²⁵ kg, (b) 1.7 kg × 10³⁰ kg
• D) (a) 1.3 kg × 10²⁶ kg, (b) 1.7 kg × 10³⁰ kg

Describe how the concept of derived demand applies to the labor market and other factor markets.

Explain how changes in the price of resources and products affect the demand for complementary and substitute resources.

Understand the difference between marginal revenue product in perfect and imperfect competition markets.

Interpret productivity changes and their impact on the demand for labor.