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NMAT > Physics > Flashcards

Physics Flashcards

1
Q

What is momentum?

A

quantity that describes an object’s resistance to stopping

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2
Q

What is the equation for momentum?

A

P = mv (momentum is equal to mass times velocity)

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3
Q

Impulse

A

change in momentum or quantity that describes the effect of a net force acting on an object

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4
Q

What is the equation for Impulse?

A

J = Force x change in time

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5
Q

What is elastic collision?

A

resulting in moving in opposite directions after colliding

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6
Q

What is inelastic collision?

A

resulting in sticking together after colliding

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7
Q

What is the Law of Conservation of Momentum?

A

momentum is always conserved in any time of collision (m1v1i + m2v2i = m1v1f + m2v2f)

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8
Q

What is the equation for waves?

A

speed = frequency x wavelength

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9
Q

What are the parts of the wave?

A

crest, trough, intensity, wavelength, amplitude, nodes

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10
Q

What doesn’t change within the electromagnetic spectrum?

A

speed

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11
Q

What will the image formed by convex mirror and concave lens be? [diverging]

A

virtual, upright and reduced

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12
Q

What is the difference of diverging convex mirror and concave lens? [diverging]

A

convex mirror is one curve while concave lens is two

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13
Q

What will the image formed by convex lens and concave mirror be? [converging]

A

virtual, upright and enlarged; real, inverted, enlarge, same sized or reduced

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14
Q

What is the difference of diverging convex lens and concave mirror? [converging]

A

convex lens is two curves while concave mirror is one

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15
Q

Example of concave lens

A

myopia (near-sightedness)

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16
Q

Example of convex lens

A

hyperopia (far-sightedness)

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17
Q

What is the difference of sound waves and light waves?

A

sound waves are longitudinal and need a medium to travel while light is an electromagnetic wave which can travel w/o a medium

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18
Q

Speed of light in gas and solid?

A

Speed in gas is faster than speed in solid so angle is also greater in gas

19
Q

What is equation of pressure?

A

Pfluid = density x gravitational acc. x height

20
Q

What is the equation of fluid continuity?

A

flow rate = volume of fluid/time elapsed

21
Q

What is the Ideal Gas Law?

A

PV = T

22
Q

What is Charles’ Law?

A

increase in V = increase in T with constant pressure

23
Q

What is Boyle’s Law?

A

increase in P = decrease in V with constant pressure with constant temp

24
Q

Gay-Lusaac’s Law?

A

increase in P = increase in T with constant pressure with constant volume

25
Q

What is Thermodynamics?

A

heat is transferred from hot body to cold body to achieve thermal equilibrium

26
Q

What is the equation for thermodynamics?

A

Q = mass x specific heat x change in temp or Q = mass x latent heat

27
Q

What is specific heat?

A

heat required to change temp

28
Q

What is latent heat?

A

heat required to change phase

29
Q

What is the zeroth law of thermodynamics?

A

thermal equilibrium

30
Q

What is the first law of thermodynamics?

A

conservation of energy; Qgained = Qlost

31
Q

What is the second law of thermodynamics?

A

entropy tends to increase (hot to cold)

32
Q

What is the third law of thermodynamics?

A

absolute zero temperature is unattainable

33
Q

What is convection

A

process of heat transfer between a solid surface and a fluid (liquid or gas) in motion

34
Q

What is conduction?

A

process of heat transfer that occurs when there is a temperature difference between two objects or regions, and heat energy is transferred through direct contact

35
Q

What is radiation?

A

emission or transmission of energy in the form of electromagnetic waves or particles

36
Q

What is Ohm’s Law?

A

Voltage = IR (current x resistance)

37
Q

What is voltage?

A

electromotive force or potential difference that would drive 1A of current against 1 ohm resistance

38
Q

What is current?

A

flow of electrical charge carriers; electrons or electron-deficient atoms

39
Q

What is resistance?

A

measure of difficulty to pass an electric current through that conductor

40
Q

What is the voltage trend in series and parallel circuits?

A

in series, voltage is additive while equal or constant all throughout in parallel

41
Q

What is the current trend in series and parallel circuits?

A

in series, current is equal or constant all throughout while additive in parallel

42
Q

What is the resistance trend in series and parallel circuits?

A

in series, resistance is additive while in parallel, their reciprocal is additive

43
Q
A
44
Q
A

NMAT (5 decks)

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