You Are Measuring How Velocity Changes with Time of Two

question 15

Multiple Choice

You are measuring how velocity changes with time of two stars like the Sun in order to detect their planets. Both stars have a velocity curve with a period of 2 years, but the maximum size (peak- to- peak amplitude) of the velocity curve of star A is 100 km/s, and for star B it is 200 km/s. What causes this difference? Assume the planets are named after their stars.

• A)Planet A is more massive than Planet B.
• B)Planet A is less massive than Planet B.
• C)Planet A is farther from Star A than Planet B is to Star B.
• D)Planet A is closer to Star A than Planet B is to Star B.
• E)Not possible to say, since you're measuring the velocity curve of the stars, not the planets.

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Definitions:

Hydrogen Bonds

Weak bonds formed between a hydrogen atom in one molecule and a more electronegative atom, important in determining the structure of water and biomolecules.

Deoxyribose Sugar

A five-carbon sugar molecule that is a component of DNA molecules, lacking an oxygen atom compared to ribose.

Phosphoric Acid

A weak acid with the chemical formula H3PO4, widely used in detergents, fertilizers, and food processing.

Thymine

A pyrimidine nucleobase found in DNA, pairing with adenine, crucial for DNA stability and integrity.