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Physics UNIT 3&4 Revision 1 Flashcards | StudBud
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Physics UNIT 3&4 Revision 1
Physics UNIT 3&4 Revision 1
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Answers
1
Who won the first AFL Grand Final
Melbourne
Carlton
Richmond
Collingwood
2
Einstein's second postulate states that the speed of light ...
Stays constant in all inertial frames of reference
Decreases when relative speeds go down
Increases when relative speeds add up
3
In this picture, magnetic field goes...
to the right
to the left
into the page
out of the page
4
In this picture, the current flows anticlockwise because the magnetic field it produces
opposes the magnetic field of the magnet
opposes the change in magnetic flux through loop
opposes the current of the magnet
5
Who won the AFL grand final 2016
Hawthorn
Bulldogs
Swans
Giants
6
why do we use a split ring commutator?
to get alternating current from it
to alternate current every half spin
to mimic the magnetic poles
to stop wires from getting tangled
7
Which of the following represents a magnetic field around an electric wire
B
A
C
D
8
A rocket with speed of 0.35c would see light coming towards it at...
c
1.35c
0.65c
9
EMF can be induced in a loop when
magnetic field strength is increasing
magnetic flux is decreasing
area of loop perpendicular to magnetic field changes
all of the above
10
Which of the following represents gravitational field around a planet
C
B
D
A
11
Special relativity causes both time dilation and length contraction
False
True
12
In the same picture, if the magnet moves to the right, then the current in the loop would...
flow clockwise
flow anticlockwise
be zero
13
Einstein's first postulate of Special Relativity stated that...
All laws of physics apply in all inertial reference frames
Earth is the optimal and absolute reference frame
Only the laws of light apply in inertial reference frames
The observer must be at rest to apply the laws of physics
14
Who won the AFL grand final 2019
Toyota
Collingwood
Giants
Richmond
15
Which of the following represents electric field around a positive charge
D
A
B
C
16
Variables for Φ
B
= B
⊥
A are
magnetic flux, magnetic field strength, current
Work function, magnetic field strength, photocurrent
magnetic flux, magnetic field strength, area
