Astronaut Mark Uri Is Space-Traveling from Planet X to Planet

question 48

Multiple Choice

Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of 0.65c relative to the planets, which are at rest relative to each other. When he is precisely halfway between the planets, a distance of 1.0 light-hour from each one as measured in the planet frame, nuclear devices are detonated on both planets. The explosions are simultaneous in Mark's frame. What is the difference in the time of arrival of the flashes from the explosions as observed by Mark?

• A) 0 min
• B) 180 min
• C) 90 min
• D) 360 min
• E) 113 min

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Definitions:

Virtue

Moral excellence and righteousness; an inclination to do good.

American Society

A diverse and dynamic society consisting of individuals from various racial, ethnic, and cultural backgrounds within the United States.

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Political authority refers to the power and legitimate right granted to governments or leaders to govern and enforce laws within a society.

British Political Authority

The legal and institutional powers that govern the United Kingdom, encompassing the monarchy, Parliament, and other democratic structures.