For a Planet in Orbit Around a Star the Perihelion

question 11

Multiple Choice

For a planet in orbit around a star the perihelion distance is r_p and its speed at perihelion is v_p. The aphelion distance is r_a and its speed at aphelion is v_a. Which of following is true?

• A) v_a = v_p
• B) v_a/ r_a = v_p/r_p
• C) v_a r_a = v_p r_p
• D) v_a/ r²_a = v_p/r²_p
• E) v_a r²_a = v_p/r²_p

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Definitions:

Agency Relationship

A legal relationship in which one party, the agent, acts on behalf of another party, the principal, in business transactions.

Obtain Property

The act of gaining possession or control over property through legal means or transactions.

Agency Relationship

A legal arrangement where one party, the agent, is authorized to act on behalf of another, the principal, in business dealings or other matters.

Authorized Act

An action taken by an individual or entity that is legally permitted under the law or by a governing body.