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HAHS HSC Physics Quiz 2 Flashcards | StudBud
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HAHS HSC Physics Quiz 2
HAHS HSC Physics Quiz 2
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#HSCPhysics#Space#Motors&Generators
Flashcards
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Answers
1
What device is shown here?
DC motor
AC motor
AC generator
Transformer
2
What was observed in the Michelson-Morley experiment when it was rotated by 90°?
No interference pattern
Destructive interference
A shift in the interference pattern
No shift in the interference pattern
3
How is a passenger moving at relativistic speeds observed?
Shorter, Older and Heavier
Thinner, Younger and Lighter
Shorter, Younger and Heavier
Thinner, Younger and Heavier
4
The primary coil has 10 turns. The secondary coil has 30 turns and 15A. What is the primary I?
0A
5A
15A
45A
5
What is the horizontal component of velocity of a projectile launched with speed u at Ɵ?
ucosƟ
usinƟ
u2 + v2
utanƟ
6
Where is gravitational potential energy defined to be zero?
At an infinite distance away from the planet
On Earth's surface
At where the moving object is
At the central core of the planet
7
Which one is a valid postulate of Einstein's Theory of Special Relativity?
Physics laws are different in all inertial frames.
The speed of light is independent of the observer's motion.
Time runs slower on a moving clock.
E = mc2
8
How will the coil move from the point of view of the commutator?
Move up
Move down
Rotate clockwise
Rotate anticlockwise
9
Which two equations are used to derive orbital velocity?
Law of Universal Gravitation & Escape Velocity
Law of Universal Gravitation & Centripetal Force
A projectile motion equation & Escape Velocity
Ep & Law of Universal Gravitation
10
Ball A rolls off a desk faster than Ball B. Compare their times taken to hit the ground.
Ball B hits the ground first
Both balls take the same time
They never hit the ground
Ball A hits the ground first
11
What is the speed of a satellite in a higher orbit compared to a lower orbit?
Higher
Approximately the same
Same
Lower
12
What is the g-force on a body standing on Earth's surface?
2g
0g
3g
1g
13
What are the components of an AC generator?
Split-ring commutator, armature, permanent magnets
Slip rings, electromagnets, coil
Split-ring commutator, coil, electromagnets
Slip rings, rotor, split-ring commutator
14
Which fundamental law of nature does rocket propulsion depend on most?
Law of Conservation of Energy
Faraday's Law
Ohm's Law
Law of Conservation of Momentum
