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Basics > Formula > Flashcards

Formula Flashcards

1
Q

Circumference of a circle

A

C=2rpi

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2
Q

Surface area of a circle

A

A= r^2*pi

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3
Q

Surface area of a sphere

A

A= 4r^2pi

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4
Q

Volume of a spere

A

V=4/3r^3pi

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5
Q

1 rad

A

360/2pi=57,3 degrees

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6
Q

SI base units and symbols

A 
meter m
kilogram kg
second s
ampere A
kelvin K
mole (mol)
candela (cd)
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7
Q

SI base quantity

A 
length
mass
time
electric current
thermodynamic temperature
amount of substance
luminous intensity
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8
Q

exa

A

E
10^18
quintillion

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9
Q

peta

A

P
10^15
quadrillion

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10
Q

tera

A

T

10^12

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11
Q

mega

A

M

10^6

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12
Q

hecto

A

h

10^2

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13
Q

deca

A

10

da

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14
Q

pico

A

10^-12

p

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15
Q

femto

A

10^-15

f

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16
Q

atto

A

10^-18

a

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17
Q

Velocity

A

v=Δs/Δt

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18
Q

Linear motion with uniform velocity

A

s= v*t

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19
Q

Acceleration

A

a=Δv/Δt

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20
Q

Linear motion with uniform acceleration

A

v=a*t+v0

v0= initial velocity

e.g: free fall

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21
Q

Average velocity

A

v=(vf-v0)/2

If velocity changes linearly with time and to calculate the distance traveled during a time interval.

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22
Q

Angular velocity

A

ω= Δφ/Δt

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23
Q

Uniform circular motion

A

φ=ω*t

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24
Q

Velocity of object in uniform circular motion

A

v=r*ω

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25
Q

Period

A

T

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26
Q

Frequency

A

1/T

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27
Q

Angular frequency

A

ω= 2pi*f

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28
Q

Force

A

F=m*a

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29
Q

Newton

A

1kg*m/s^2

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30
Q

Law of universal gravitation

A

F=G(m1*m2)/r^2

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31
Q

G

A

6,67*10^-11

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32
Q

Hooke’s law/Restoring force

A

F=-k*s

33
Q

Work

A

W=F*s

W=P*t

34
Q

Power

A

P=W/t

35
Q

Work with force at angle

A

W= Fscos of angle

36
Q

1eV

A

1,6*10^-19

37
Q

1 cal

A

4,19 J

38
Q

Kinetic energy

A

E=0,5mv^2

W=0,5mv^2

39
Q

Gravitational potential energy

A

E=mgh

W=mgh

40
Q

Elastic potential energy

A

E=0,5ks^2

41
Q

Mass-energy equivalence

A

E=m*c^2

42
Q

Pressure

A

P=F/A

43
Q

1 bar

A

10^5 Pa

44
Q

1 atm

A

101 kPa

45
Q

1 mmHg

A

133 Pa

46
Q

Density

A

D=m/V

47
Q

Hydrostatic pressure

A

P= dgh

48
Q

Displacement of harmonic oscillation

A

y=Asin(ωt+φ)

49
Q

Velocity of harmonic oscillation

A

v= ωAcos(ω*t+φ)

50
Q

Maximum velocity of harmonic oscillation

A

vmax=ω*A

51
Q

Acceleration of harmonic oscillation

A

a= -ω^2Asin(ω*t+φ)

52
Q

Maximum acceleration of harmonic oscelleration

A

amax=-ω^2*A

53
Q

Force on object experiencing harmonic oscillation

A

F=mω^2y

54
Q

Natural frequency/Eigen frequency

A

f = 1/2pi* rot(k/m)

55
Q

Velocity of propagation

A

c=f*λ

56
Q

Law of refraction/snells law

A

sin alpha/sin beta=c1/c2

57
Q

Standing wave

A

l=k*(λ/2)

58
Q

Heat capacity

A

C=Q/ΔT

59
Q

Specific heat capacity

A

c=C/m

60
Q

Mix of Q and c

A

Q=cmΔT

61
Q

Specific latent heat

A

L=Q/m

62
Q

Amount of substance

A

v=N/Na

63
Q

Ideal gas law

A

pV=vRT

64
Q

Coulomb force

A

F=k ((q1*q2)/r^2)

65
Q

Electric dipole moment

A

p=q*d

unit: C*m or debye

66
Q

Electric field strength

A

E= F/q

67
Q

Voltage

A

U=W/q

68
Q

Electric field strength of capacitor

A

U=E*d

69
Q

Capacitance

A

C=q/U

70
Q

Capacitance w/dimensions

A

C= E0Er(A/d)

E0= absolute permittivity
Er=relative permittivity

71
Q

Electric energy stored in the capacitor

A

W=0,5CU^2

72
Q

Electric current

A

I=Δq/Δt

73
Q

Electric resistance

A

R=U/I

R= density*l/A

74
Q

Electric conductance

A

G=1/R

75
Q

Specific conductance/Conductivity

A

sigma=1/specific resistance

76
Q

Work of electric current/Joule heating

A

W=UIt

W= R*I^2

77
Q

Electric power

A

P=U*I

78
Q

Capacitive reactance

A

Xc=1/(ω*C)

C is conductance

Basics (10 decks)

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