Exam (elaborations)
Chapter 35 Special Theory of Relativity Questions with Answers 2024
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Chapter 35 Special Theory of Relativity
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Chapter 35 Special Theory of RelativityIf you walk at 1 km/h down the aisle toward the front of a train that moves at 60 km/h,
what is your speed relative to the ground? - answer61 km/h
In the preceding question, is your approximate speed relative to the Sun as you walk
down the aisle of the train changed slightly or by a lot? - answerSpeed relative to the
Sun is only slightly changed.
What hypothesis did G. F. FitzGerald make to explain the findings of Michelson and
Morley? - answerFitzgerald hypothesized that the experimental apparatus shrunk.
What classical idea about space and time did Einstein reject? - answerEinstein rejected
the idea that space and time are independent.
What is the same in Einstein's first postulate? - answerThe laws of nature are the same
in uniformly moving reference frames.
What is constant in Einstein's second postulate? - answerThe speed of light in a
vacuum
Inside the moving compartment of Figure 35.4, light travels a certain distance to the
front end and a certain distance to the back end of the compartment. How do these
distances compare as seen in the frame of reference of the moving rocket? -
answerThe distances traveled by light are the same.
How do the distances in Reading Check Question 7 compare as seen in the frame of
reference of an observer on a stationary planet? - answerThe distance travelled by light
to the back is shorter.
How many coordinate axes are usually used to describe three-dimensional space?
What does the fourth dimension measure? - answerThree dimensions for space, a forth
dimension for time.
Under what condition will you and a friend share the same realm of spacetime? -
answerExperience the same spacetime when we are in the same frame of reference
with zero velocity relative to each other.
What is special about the ratio of the distance traveled by a flash of light to the time the
light takes to travel this distance in a vacuum? - answerThe ratio is always the same,
the speed of light.
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