Event 1 happens at x=2 light years, ct=2 light years. Event 2 happens at x=1 light years ct=5 light years.

The proper time between the events is less than 3 years

Event 1 happens at x=2 light years ct=2 light years. Event 2 happens at x=2 light years ct=5 light years.

The proper time between the events is 3 years

Which of these is a postulate of special relativity?

The laws of physics have the same form in all inertial frames

An inertial frame is...

A frame in which Newton's 1st law is obeyed

Event 1 occurs at (0,0). Event 2 occurs at (x,t). (ct)2-(x)2=400.

1 and 2 are time-like separated

always longer than length in any other frame

studbud

Relativity is fun

10 termsStudBud Administration12 plays

Imported from external platform

Flashcards10 cardsFPractice quizPHost liveL

Questions 10

Answers

1
v=0.8 c. What is the value of gamma?
4/5
3/5
5/4
5/3
2
Event 1 happens at x=2 light years, ct=2 light years. Event 2 happens at x=1 light years ct=5 light years.
The proper time between the events is 3 years
The proper time between the events is more than 3 years
The proper time between the events is less than 3 years
There is no way to know
3
Event 1 happens at x=2 light years ct=2 light years. Event 2 happens at x=2 light years ct=5 light years.
The proper time between the events is 3 years
The proper time between the events is less than 3 years
The proper time between the events is more than 3 years
There is no way to know
4
Which of these is a postulate of special relativity?
Nothing can travel faster than the speed of light.
The proper time is always the shortest time.
If you travel faster than the speed of light you will go back in time
The laws of physics have the same form in all inertial frames
5
According to SR: v=0.8c. In frame S, u=-0.8c
In frame S', u'=0.8c
In frame S', u'=0
In frame S', u'=-0.98c
In frame S', u'=-1.6c
6
An inertial frame is...
A frame in which Newton's 1st law is obeyed
A frame in which Newton's 3rd law is obeyed
A frame in which Newton's 2nd law is obeyed
A picture frame
7
Event 1 occurs at (0,0). Event 2 occurs at (x,t). (ct)²-(x)²=400.
1 and 2 are light-like separated
1 and 2 are best buddies
1 and 2 are space-like separated
1 and 2 are time-like separated
8
Which of these are invariant under a Galilean transformation?
time
All of them
momentum
kinetic energy
9
Proper length is...
shorter or longer, but not the same as, length in any other frame
the same as length in any other frame
always shorter than length in any another frame
always longer than length in any other frame
10
Which of these are invariant in special relativity?
velocity in the y direction
velocity in the x direction
Spacetime interval
Kinetic energy

Relativity is fun Flashcards | StudBud