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RELATIVITY
RELATIVITY
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#physics#relativity#Marxwell#Michelson#Morley#Enstein#theory
Flashcards
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Answers
1
The stretching out of time due to motion is called time
stretching
dilation
motion
contraction
2
Which of the following is what superman would look like when flying at high speeds?
A
C
B
D
3
Einstein's first postulate tells us that the laws of physics are:
different depending on the situation
the same in all inertial reference systems
common sense applied to microscopic and macroscopic things
the same in all frames of reference
4
When the speed tends to the light speed (
v → c
), γ tends to 1 (
γ → 1
). TRUE or FALSE?
TRUE
FALSE
5
For special theory of relativity, events that are simultaneous in one frame of reference
are not simultaneous in other frames of reference.
are simultaneous in all frames of reference.
may or may not be simultaneous in other frames of reference.
6
In accordance with time dilation,
Δt'= Δt∕γ
TRUE or FALSE
TRUE
FALSE
7
The second postulate said that the speed of light isn't a constant in all frames of reference
TRUE
FALSE
8
Velocity addition law is:
V' = (V-Vo) / (1-VVo)
V' = V+Vo
V' = V-Vo
V' = (1-VVo) / (V-Vo)
9
The speed of light (c) =
3 × 108 meters/second
3 × 108 meters/hour
3 × 109 kilometers/hour
3 × 1012 meters/second
10
According to the following Minkowski diagram, which is the right sentence?
A and B are simultaneous in S, A happens before B in S'
B and C happen before A in S
A and B are simultaneous in S and also in S'
B and C are simultaneous in S', C happens before B in S
11
Which is the dilation coefficient (γ)?
1∕√[1-(v2∕c)]
1∕√[1-(v∕c2)]
1/√(1-β )
1/√(1-β2 )
12
What is proved by the Michelson-Morley experiment?
Time dilation occurs
The speed of light depends by the inertial reference frames
Speed of light is the same in all inertial reference frames
Length contraction occurs
