You Are the Science Officer on a Visit to a Distant

question 50

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

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Definitions:

Accounts Receivable Turnover

A financial ratio that measures how efficiently a company collects revenue from its customers by comparing net credit sales to average accounts receivable.

Net Credit Sales

The total revenue from sales made on credit, minus returns and allowances, over a specific period.

Accounts Receivable

A financial record representing the money owed to a company by its customers for goods or services delivered on credit.

Profitability Ratio

A category of financial metrics used to assess a business's ability to generate earnings relative to its revenue, assets, equity, or other financial aspects.