From a Stationary Position, I Observe a Moving Boxcar, Which

question 47

Multiple Choice

From a stationary position, I observe a moving boxcar, which has a mirror along the front wall, but it is open at the back of the boxcar. I send a flash of light from my flashlight and time the flash of light as it goes to the front of the boxcar and returns to the back of the boxcar. A passenger in the boxcar also times the round trip of the flash of light. Compare the times recorded on our watches.

• A) The time recorded on the two watches is the same.
• B) The time recorded on his watch is shorter.
• C) The time recorded on his watch is longer.
• D) The answer depends on the reference system you are in.

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Definitions:

Random Urine

A urine sample taken at any given time, without any prior preparation, used for general or specific medical testing.

Specimen

A sample or part taken from a living organism or the environment for the purpose of scientific examination.

Optical Instrument

An optical instrument is a device designed to manipulate light in order to view or analyze objects with enhanced detail.