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Special relativity days 1-2 Flashcards | StudBud

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What equations require that light's speed is constant?

What are the two axes in a spacetime diagram?

Special relativity days 1-2

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Answers

1
What are the two axes in a spacetime diagram?
x and y
y and t
x and t
x and z
2
What equations require that light's speed is constant?
Newton's laws of motion
The laws of thermodynamics
Maxwell's equations
Einstein's equations
3
How far is one light-second?
299,792,458 meters/second
300,000,000 meters
1
299,792,458 meters
4
What is the second postulate of relativity?
The speed of light depends on what it is travelling through
The speed of light transforms with the speed of the frame
The speed of light is constant in all frames
The speed of light is constant in all inertial frames
5
What is a pseudoforce?
A force created by a non-inertial frame
A force that doesn't produce acceleration
A force that doesn't depend on mass
A force that lies
6
What is the first postulate of special relativity?
The laws of physics are not the same in all frames
The laws of physics are the same in all non-inertial frames
The laws of physics are the same in all inertial frames
The laws of physics are the same in all frames
7
What would constitute evidence that light moves in a medium called the ether?
If we could slow down its velocity
If its velocity were different in different directions
If its velocity were the same in all non-inertial frames
If it moved in zig zags instead of straight lines
8
What is the speed of light in SR units?
Exactly 299,792,458
About 300,000,000 m/s
Exactly 299,792,458 m/s
1
9
What is required to define a frame of reference?
An observer and their velocity
The origin's position and axis orientation
An observer, their orientation, and their position
The origin's position, axes' orientation, and velocity