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CfE Higher Physics What's Special About Relativity Flashcards | StudBud
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CfE Higher Physics What's Special About Relativity
CfE Higher Physics What's Special About Relativity
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CfE Higher Physics Based on the Classroom Tools VIdeo "What's Special About Relativity?"
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1
Another name for a coordinate system is
a 3-D plane
a registration frame
a reference frame
a perpendicular plane
2
An inertial frame of reference is one in which the motion of a particle
is accelerating
remains at rest
travels at constant speed or in a circle
is not affected by outside forces
3
A mass be accelerated to the speed of light
True
False
4
to fully describe a ball's place you need
inertia and time
3 dimensions and time
three directions and space
time and two dimensions
5
Two events simultaneous in one inertial frame of reference will be simultaneous in another
false
trus
6
In the cartesian coordinates system there are
Three planes called X, Y, Z
three axes, and three planes, X,Y, Z planes
three planes X-Y, X,X,Y, and ZYY
Three axes X,Y, Z and three planes
7
Time passes at the same rate for everyone
False
True
8
We don't notice length contraction in everyday life because
Einstein's theory only applies to the speed of light
it only happens in the dimension we can't see
it doesn't work at slow speeds
Lorentz show that the effect is not noticable at low speeds
9
A ball thrown forwards at 7 ms
-1
by someone travelling at 5 ms
-1
would have a relative velocity of
7 ms-1 forwards as observed by the person throwing the ball
12 ms-1 forwards as observed by the person throwing the ball
12 ms-1 forwards as observed by a stationary person on the street
2 ms-1 forward
10
Special Relativity deals with
gravity
measuring objects moving at increasing velocity
moving in non-inertial frames of reference
measuring objects moving at constant velocity
11
The time of an event is meaningless unless we know the frame of reference in which we refer
False
True
12
Which of these Einstein papers was not written and published in 1905
Brownian Motion
General Relativity
Photoelectric Effect
Special Relativity
13
The Principle of Relativity states
the laws of Physics vary depending on your relative position
the laws of Physics are true for all non-inertial frames of reference
the laws of Physics are true for all inertial frames of reference
the laws of Physics are always the same
14
In the theory of relativity the velocity
c
plays the part of a limiting velocity
False
True
15
length contraction occurs
in the dimension of the movement of travel
in the dimension perpendicular to the movement of travel
in the Z dimension only
in all three dimensions and time
16
If a ball was 1.5 m above the origin, 0.5 m to the left of the origin and 1m in front of the origin the coordinates are
(-0.5, 1.5, 1)
(1.5, -0.5, 1)
(1, 1.5, -0.5)
(0.5, 1.5, 1)
17
Inertia- is the tendency of a stationary object to stay at rest
False
True
18
Distance measurements are the same regardless of how fast the measurer is travelling
False
True
19
Velocity is a vector...
so the velocity of observer must be subtracted from the velocity of light
so the velocity of light is added to the velocity of the observer.
but the velocity of light is the same for all observers
so the velocity of light is dependent on the speed of the person
20
Time and space cannot be separated when describing events
False
True
21
Time diliation suggests that to an observer on the beach a windsurfers travelling close to c clock would run
you cannot tell their clock is too small
the windsurfers clock would run fast
there would be no difference
the windsurfers clock would run slow
22
An stationary roadside observer watching a magic car moving close to c will see the car as longer than at rest
False
True
