Let the Orbital Radius of a Planet Be R and Let

question 73

Multiple Choice

Let the orbital radius of a planet be R and let the orbital period of the planet be T. What quantity is constant for all planets orbiting the sun, assuming circular orbits?

• A) \(T ^ { 2 } / R 3\)
• B) \(T ^ { 2 } / R\)
• C) \(T / R 2\)
• D) \(T ^ { 3 } / R ^ { 2 }\)
• E) T/R

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Definitions:

Sieve Tube

Sugar-conducting tube of phloem; consists of stacked sieve elements.

Pressure Gradients

A physical quantity that represents the direction and rate at which pressure changes in a particular direction.

Evaporation

The process by which water changes from a liquid to a vapor or gas, a key component of the Earth's water cycle.

Transpiration

The method through which water moves inside plants from the roots to tiny openings on the bottom of leaves, transforming into vapor before being emitted into the air.