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Physics Required Recall > Required Recall > Flashcards

Required Recall Flashcards

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1
Q

State the seven base quantities

A

Mass, Time, Distance, Amount of substance, Luminous Intensity, Current, Temperature

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2
Q

State the seven base quantities units

A

kg, seconds, metres, moles, candela, amps, kelvin

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3
Q

State the prefixes for all measurements lowest to highest

A 
Pico - x10^-12
Micro - x10^-9
Nano - x10^-6
Milli - x10^-3
Kilo - x10^3
Mega - x10^6
Giga - x10^9
Tera - x10^12
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4
Q

What are the equations for area of a 2d shape

A

Square - baseheight
Triangle - 0.5baseheight
Circle - piradius^2

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5
Q

What are the equations for surface area of a 3d shape

A

Sphere - 4piradius^2
Cylinder - (2piradiusheight) + (2piradius^2)
Rectangular Block - 2(widthlength+heightlength+heightwidth)

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6
Q

What are the equations for volume

A

Rectangular Block - widthheightlength
Sphere - 4/3piradius^3
Cylinder - piradius^2height

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7
Q

What is the equation for circumference

A

2piradius

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8
Q

What is a scalar quantity? Give examples

A

A scalar quantity has magnitude

Speed, time, distance

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9
Q

What is a vector quantity? Give examples

A

A vector quantity has both direction and magnitude

Velocity, acceleration, displacement

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10
Q

What does the gradient represent on a distance-time graph? What does the area represent?

A

The gradient is the speed of the object and the area represents nothing

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11
Q

What does the gradient represent on a velocity-time graph? What does the area represent?

A

The gradient is the acceleration of the object and the area is the displacement

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12
Q

What does the gradient represent on a acceleration-time graph? What does the area represent?

A

The area is the velocity and the gradient is nothing

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13
Q

What is Newtons first Law of Motion

A

An object in motion stays in motion and an object at rest stays at rest unless acted on by an unbalanced force

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14
Q

What is Newtons second Law of Motion

A

F=ma

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15
Q

What is Newtons third Law of Motion

A

For every action, there is an equal and opposite reaction

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16
Q

What is an interaction pair

A

A force pair where force is exerted by an object and an equal force is exerted back onto the object e.g Pushing a block, force is exerted by the hand on the block but an equal and opposite force is exerted back onto the hand by the block

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17
Q

What is the law of conservation of linear momentum

A

The total momentum before a collision must be the same after a collision (providing no external force is applied during the collision)

18
Q

What is the moment of a force

A

The moment is the turning effect of a force

19
Q

What is the principle of energy conservation

A

Energy cannot be created nor destroyed, only conserved

20
Q

What is the definition of current

A

The rate of flow of electric charge

21
Q

What is the definition of the electromotive force

A

The amount of energy supplied by a source to a coulomb of charge

22
Q

Under what conditions does Stokes Law apply

A

Constant temperature, low speed, laminar flow

23
Q

What is the relationship between upthrust and displaced fluid

A

Upthrust is equal to the weight of fluid displaced

24
Q

What is the limit of proportionality

A

The point that up until reached, Hooke’s law applies

25
Q

What is the elastic limit

A

The point that once passed an object will no longer return to its original shape

26
Q

What is the yield point

A

The point at which the object will no longer attempt to return to it’s original shape and will increase in size without any force being applied

27
Q

What is elastic deformation

A

Where the material will not return to its original shape when the deforming force is removed

28
Q

What is plastic deformation

A

Where the material will return to its original shape when the deforming force is removed

29
Q

What is the gradient of a force-extension graph? What is the area?

A

Gradient is spring constant and the area is work done

30
Q

What is the definition of a transverse wave

A

The propagation of the wave is perpendicular to the oscillations

31
Q

What is the definition of a longitudinal wave

A

The propagation of the wave is parallel to the oscillations

32
Q

What is amplitude

A

The displacement from a point on a wave to the centre of the wave

33
Q

What is a wave front

A

The front of a wave

34
Q

What is coherence

A

Waves with a constant phase relationship and frequency

35
Q

What is path difference

A

The difference in the length of the paths that two waves take

36
Q

What is superposition

A

Two or more waves meeting; displacement is sum of individual displacements.

37
Q

What is interference

A

Where waves collide and superposition occurs

38
Q

What is phase

A

The position within a cycle that a given point occupies, relative to the onset of the cycle.

39
Q

What is a standing/stationary wave

A

The wave profile does not move - it appears to be stationary. Nodes have zero displacement, whereas antinodes reach max displacement.

40
Q

What are real and virtual images

A

Real images are formed when light rays actually meet on a screen (or at a detector).

Virtual images are produced when the light rays appear to meet on the other side of the lens

41
Q

What is plane polarisation and give examples of its use

A

Oscillations of an electromagnetic wave in one direction only which is perpendicular to direction of propagation/energy transfer.

Identification and analysis of optically active chemicals
Liquid crystal displays
Sunglasses and snow goggles
TV and radio signals
3D film glasses
42
Q

What is diffraction

A

When a wave changes direction when passing through a gap

Physics Required Recall (1 decks)

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