What Two Observable Properties of a Cepheid Variable Are Directly

question 4

Multiple Choice

What two observable properties of a Cepheid variable are directly related to one another?

• A) The period between its peaks of brightness and its luminosity
• B) The period between its peaks of brightness and its distance
• C) Its luminosity and its mass
• D) Its mass and its distance

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Definitions:

Elasticity of Demand

A measure of how much the quantity demanded of a good responds to a change in the price of that good, reflecting consumer sensitivity to price changes.

Horizontal Line

A straight line that has a constant y-value in the plane Cartesian coordinate system, indicating no change in the vertical direction.

Inferior Goods

For inferior goods, demand decreases as income increases.

Demand for Potatoes

The consumers' desire and willingness to purchase potatoes at a given price.