Formula Flashcards
(78 cards)
1
Q
Circumference of a circle
A
C=2rpi
2
Q
Surface area of a circle
A
A= r^2*pi
3
Q
Surface area of a sphere
A
A= 4r^2pi
4
Q
Volume of a spere
A
V=4/3r^3pi
5
Q
1 rad
A
360/2pi=57,3 degrees
6
Q
SI base units and symbols
A
meter m kilogram kg second s ampere A kelvin K mole (mol) candela (cd)
7
Q
SI base quantity
A
length mass time electric current thermodynamic temperature amount of substance luminous intensity
8
Q
exa
A
E
10^18
quintillion
9
Q
peta
A
P
10^15
quadrillion
10
Q
tera
A
T
10^12
11
Q
mega
A
M
10^6
12
Q
hecto
A
h
10^2
13
Q
deca
A
10
da
14
Q
pico
A
10^-12
p
15
Q
femto
A
10^-15
f
16
Q
atto
A
10^-18
a
17
Q
Velocity
A
v=Δs/Δt
18
Q
Linear motion with uniform velocity
A
s= v*t
19
Q
Acceleration
A
a=Δv/Δt
20
Q
Linear motion with uniform acceleration
A
v=a*t+v0
v0= initial velocity
e.g: free fall
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.
22
Q
Angular velocity
A
ω= Δφ/Δt
23
Q
Uniform circular motion
A
φ=ω*t
24
Q
Velocity of object in uniform circular motion
A
v=r*ω
25
Period
T
26
Frequency
1/T
27
Angular frequency
ω= 2pi*f
28
Force
F=m*a
29
Newton
1kg*m/s^2
30
Law of universal gravitation
F=G(m1*m2)/r^2
31
G
6,67*10^-11
32
Hooke's law/Restoring force
F=-k*s
33
Work
W=F*s
| W=P*t
34
Power
P=W/t
35
Work with force at angle
W= F*s*cos of angle
36
1eV
1,6*10^-19
37
1 cal
4,19 J
38
Kinetic energy
E=0,5*m*v^2
| W=0,5*m*v^2
39
Gravitational potential energy
E=m*g*h
| W=m*g*h
40
Elastic potential energy
E=0,5*k*s^2
41
Mass-energy equivalence
E=m*c^2
42
Pressure
P=F/A
43
1 bar
10^5 Pa
44
1 atm
101 kPa
45
1 mmHg
133 Pa
46
Density
D=m/V
47
Hydrostatic pressure
P= d*g*h
48
Displacement of harmonic oscillation
y=A*sin(ω*t+φ)
49
Velocity of harmonic oscillation
v= ω*A*cos(ω*t+φ)
50
Maximum velocity of harmonic oscillation
vmax=ω*A
51
Acceleration of harmonic oscillation
a= -ω^2*A*sin(ω*t+φ)
52
Maximum acceleration of harmonic oscelleration
amax=-ω^2*A
53
Force on object experiencing harmonic oscillation
F=m*ω^2*y
54
Natural frequency/Eigen frequency
f = 1/2pi* rot(k/m)
55
Velocity of propagation
c=f*λ
56
Law of refraction/snells law
sin alpha/sin beta=c1/c2
57
Standing wave
l=k*(λ/2)
58
Heat capacity
C=Q/ΔT
59
Specific heat capacity
c=C/m
60
Mix of Q and c
Q=c*m*ΔT
61
Specific latent heat
L=Q/m
62
Amount of substance
v=N/Na
63
Ideal gas law
pV=vRT
64
Coulomb force
F=k ((q1*q2)/r^2)
65
Electric dipole moment
p=q*d
unit: C*m or debye
66
Electric field strength
E= F/q
67
Voltage
U=W/q
68
Electric field strength of capacitor
U=E*d
69
Capacitance
C=q/U
70
Capacitance w/dimensions
C= E0*Er*(A/d)
E0= absolute permittivity
Er=relative permittivity
71
Electric energy stored in the capacitor
W=0,5*C*U^2
72
Electric current
I=Δq/Δt
73
Electric resistance
R=U/I
R= density*l/A
74
Electric conductance
G=1/R
75
Specific conductance/Conductivity
sigma=1/specific resistance
76
Work of electric current/Joule heating
W=U*I*t
W= R*I^2
77
Electric power
P=U*I
78
Capacitive reactance
Xc=1/(ω*C)
C is conductance
