Time Dilation: an Astronaut in an Inertial Reference Frame Measures

question 42

Multiple Choice

Time dilation: An astronaut in an inertial reference frame measures a time interval Δt between her heartbeats. What will observers in all other inertial reference frames measure for the time interval between her heartbeats?

• A) Δt
• B) more thanΔt
• C) less than Δt
• D) The answer depends on whether they are moving toward her or away from her.

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A prejudiced belief or idea based on the notion that racial differences produce an inherent superiority of a particular race.

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