Planets Go Around the Sun in Elliptical Orbits

question 18

Multiple Choice

Planets go around the sun in elliptical orbits.The highly exaggerated diagram below shows a portion of such an orbit and the force on the planet at one position along that orbit.The planet is moving to the right.F_|| and
Are the components of the force parallel (tangential) and perpendicular (normal) to the orbit.The work they do is W_|| and
) At the position shown

• A)W_|| slows the planet down; speeds it up.
• B)W_|| slows the planet down; does no work on it.
• C)W_|| speeds the planet up; does no work on it.
• D)W_|| speeds the planet up; slows it down.
• E)W_|| does no work on it; speeds the planet up.

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Definitions:

Efficient Frontier

A graphical representation of the set of optimal portfolios that provides the best possible expected return for a given level of risk.

Capital Allocation Line

A graph showing all possible combinations of risk-free assets and a portfolio of risky assets, illustrating optimal portfolios based on expected return and risk.

Expected Rate of Return

The expected rate of return is the anticipated percentage increase or decrease in an investment over a specified time period.

Capital Allocation Line

A graph showing all possible combinations of risky and risk-free assets for an investor, representing different levels of expected risk and return.