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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. You have previously determined that the planet orbits 2.9 × 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 19.5 m/s2. What are the masses of (a) the planet and (b) the star?
(G = 6.67 × 10-11 N ∙ m2/kg2)
Incentives
Financial or non-financial rewards offered to encourage specific behaviors or actions among individuals or organizations.
Trade
The exchange of goods or services between parties in return for other goods, services, or money.
Gains From Trade
The benefits that entities receive from the voluntary exchange of goods or services, typically leading to an improvement in overall welfare.
Street Lighting
A service provided, often by local governments, that involves the installation and maintenance of public lighting along streets and in public areas for safety and visibility.
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