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Physics > 1.1 Ffiseg Sylfaenol > Flashcards

1.1 Ffiseg Sylfaenol Flashcards

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1
Q

SI

A

System Unedau Rhyngwladol

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2
Q

Mas abbrv.

A

m

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3
Q

Hyd abbrv.

A

l

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4
Q

Amser abbrv.

A

t

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5
Q

Cerrynt abbrv.

A

I (i)

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6
Q

Tymheredd abbrv.

A

T

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7
Q

Arwynebedd abbrv.

A

A

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8
Q

Cyfaint abbrv.

A

V

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9
Q

Cyflymder / Buanedd abbrv.

A

v

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10
Q

Cyflymiad abbrv.

A

a

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11
Q

Grym abbrv,

A

F

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12
Q

Dwysedd abbrv.

A

p

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13
Q

Amledd abbrv.

A

f

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14
Q

Gwasgedd abbrv.

A

P

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15
Q

Egni / Gwaith abbrv.

A

W

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16
Q

Pwer abbrv.

A

P

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17
Q

Mas uned

A

kg

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18
Q

Hyd uned

A

m

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19
Q

Amser uned

A

s

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20
Q

Cerrynt uned

A

A (amperau)

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21
Q

Tymheredd uned

A

K (kelvin)

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22
Q

Arwynebedd uned

A

m^2

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23
Q

Cyfaint uned

A

m^3

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24
Q

Cyflymder / Buanedd uned

A

ms^-1

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25
Q

Cyflymiad uned

A

ms^-2

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26
Q

Grym uned

A

N (Newton)

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27
Q

Dwysedd uned

A

kgm^-3

28
Q

Amledd uned

A

Hz (Hertz)

29
Q

Gwasgedd uned (2)

A

Pa (Pascal) / Nm^-2

30
Q

Egni / Gwaith uned

A

J (Joule)

31
Q

Pwer uned

A

W (Watt) / Js^-1

32
Q

6 uned sylfaenol (SI)

A

Mas (kg), Hyd (m), Amser (s), Cerrynt trydanol (A), Tymheredd (K), Swm y sylwedd (mol)

33
Q

Beth sy’n gwneud y 6 uned sylfaenol?

A

Methu symleiddio’r gwerthoedd yn bellach

34
Q

Beth yw Unedau Deilliadol?

A

Gallu symleiddio’n bellach

35
Q

Beth sy’n gwneud hafaliad yn homogenaidd?

A

Os mae’r unedau + dimensiynau’r un peth ar y ddwy ochr

36
Q

Mesurau Scalar

A

Maint yn unig

37
Q

Mesurau Fector

A

Maint a chyfeiriad

38
Q

S/F: Amser

A

Scalar

39
Q

S/F: Buanedd

A

Scalar

40
Q

S/F: Pellter

A

Scalar

41
Q

S/F: Tymheredd

A

Scalar

42
Q

S/F: Cyfaint

A

Scalar

43
Q

S/F: Dwysedd

A

Scalar

44
Q

S/F: Mas

A

Scalar

45
Q

S/F: Cyflymder

A

Fector

46
Q

S/F: Cyflymiad

A

Fector

47
Q

S/F: Dadleoliad

A

Fector

48
Q

S/F: Grym

A

Fector

49
Q

S/F: Momentwm

A

Fector

50
Q

S/F: Maes magneteg

A

Fector

51
Q

S/F: Maes trydanol

A

Fector

52
Q

Grym cydeffaith

A

Un grym sydd yn amnewid sawl grym arall ar wrthrych ac yn parhau i gael yr un effaith ar y mudiant (cyfanswm grymoedd)

53
Q

Fectorau Cymhlan

A

Ar yr un plain

54
Q

Cydrannu Fector

A

Rhannu fector unigol i mewn i ddwy gydran wahanol sy’n berpendicwlar i’w gilydd

55
Q

Ansicrwydd absoliwt (os mwy nag un gwerth)

A

Gwerth mwyaf - lleiaf /2

56
Q

Ansicrwydd absoliwt (os un gwerth)

A

Cydranniad offer

57
Q

Ansicrwydd canrannol

A

Ansicrwydd absoliwt x 100 / gwerth cymedrig

58
Q

g

A

9.81

59
Q

Craidd disgyrchiant

A

Y pwynt fewn gwrthrych ble gallwn ystyried holl bwysau’r gwrthrych yn gweithredu

60
Q

Cydbwysedd sefydlog

A

Dychwelyd i’w leoliad ecwilibriwm ar ol cael ei ddadleoli ychydig

61
Q

Cydbwysedd ansefydlog

A

Ddim yn dychwelyd i’w leoliad ecwilibriwm a ddim yn aros yn ei safle dadleoliad ar ol cael ei ddadleoli ychydig

62
Q

Cydbwysedd niwtral

A

Aros yn ei safle dadleoliad ar ol iddo gael ei dadleoli ychydig

63
Q

Sefydlog

A

Llinell craidd disgyrchiant o fewn y sail

64
Q

Ar fin cwympo

A

Craidd disgyrchiant ar ffin y sail

65
Q

Moment

A

Grym x Pellter perpendiciwlar o’r pwynt i linell arwaith y grym

66
Q

Egwyddor Momentau

A

Cyfanswm momentau clocwedd = Cyfanswm momentau gwrthglocwedd

67
Q

Cyrff mewn cydbwysedd

A

Grym cydeffaith yn sero, Cyfanswm momentau yn sero

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