Conceptual Physics Relativity- Space and Time
Questions And Answers 100% Correct Latest
Update 2025
According to Einstein's special theory of relativity, time is affected by motion in
space at a variable velocity. - ANSWER False
Time appears to pass more slowly in a frame of reference that is moving relative
to the observer. - ANSWER True
Not all of the laws of nature are the same in all uniformly moving frames of
reference. - ANSWER False
No experiment can be devised to detect whether the observer is moving at
constant velocity. - ANSWER True
The speed of light in empty space is the same in all frames of reference. -
ANSWER True
The speed of light does not have the same value regardless of the motion of the
source or the motion of the observer. - ANSWER False
What is a postulate? - ANSWER a fundamental assumption
What is space-time? - ANSWER space and time are two parts of one whole
, Can you travel while remaining in one place in space? Explain - ANSWER Yes, in
time.
What is time dilation? - ANSWER stretching of time due to motion in space
What does it mean to say that motion is relative? - ANSWER It depends on a
frame of reference.
The speed of a ball you catch that is thrown from a moving truck depends on the
speed and direction of the truck. Does the speed of light caught from a moving
source similarly depend on the speed and direction of the source?
Explain. - ANSWER No, the speed of light is always the same.
What does it mean to say that the speed of light is a constant? - ANSWER It has
the same value in all frames of reference.
What is the first postulate of special relativity? - ANSWER The laws of nature
are the same in all uniformly moving frames.
What is the second postulate of special relativity? - ANSWER C is always the
same whether the source, the receiver, or both move.
When a flashing light source approaches you, does the speed of light, or the
frequency of arrival of light flashes increase? - ANSWER the frequency of
arrival of light flashes increases
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