Two Stars Are at Rest Relative to Each Other

question 62

Multiple Choice

Two stars are at rest relative to each other. A spaceship is moving between these two stars at 0.932c relative to each star. To someone in the ship, the distance between the two stars appears to be
26) 4 light-years. What is the distance between the stars in their own rest frame?

• A) 72.8 light-years
• B) 55.4 light-years
• C) 9.57 light-years
• D) 21.1 light-years

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Definitions:

Sample Sizes

The number of observations or units chosen from a larger population for the purpose of statistical analysis.

Weighted Average

An average resulting from the multiplication of each component by a factor reflecting its importance.

Z-score

A numerical metric indicating how a particular value compares to the average of a dataset, expressed by the number of standard deviations it lies from the mean.

P-value

The likelihood of encountering experimental results that are at least as significant as the actually observed results, given the null hypothesis is assumed to be accurate.