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

question 39

Multiple Choice

Simultaneity: Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of 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:

Sensitivity

Sensitivity represents the capacity to perceive, understand, and respond to complex emotional or situational subtleties, often crucial in interpersonal communications and cultural exchanges.

Idealized Indian

A stereotypical and romanticized portrayal of Native American people, often ignoring the complexities and realities of their cultures and histories.

Modern Racism

A form of prejudice that is subtler than overt racism, often manifesting through bias and discriminatory practices embedded in social, political, and economic systems.

Covert Racism

Covert racism involves discriminatory practices and attitudes that are hidden or subtle rather than openly acknowledged or displayed.