For a Planet in Orbit Around a Star the Perihelion

question 34

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/r_a ² = v_p/r_p ²
• E)v_a r_a ² = v_p r_p ²

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Definitions:

Effective Price

The final price after accounting for subsidies, taxes, or other incentives, effectively what the consumer pays or receives.

Demand Curve

A visual depiction highlighting how the price of an item or service influences the quantity of that item or service that people are willing to purchase over a designated period.

Demand Curve

A graphical representation showing the relationship between the price of a good or service and the quantity demanded for a certain period of time.

Effective Price

The final price a consumer pays for a product or service after accounting for any discounts, taxes, or additional charges.