Equations Flashcards
Voltage, Current, Resistance
V=IR
Current, Time, Charge
Q=It
Current, Voltage, Power
P=IV
Energy, Charge, Voltage
E=QV
Energy, Power, Time
E=Pt
Ohm’s Law
V=IR
Mass, Acceleration, Force
F=Ma
Density, Mass, Volume
D=M/V
Velocity, Frequency, Wavelength
v=f*Lamda
Distance, Time, Velocity
v=D/t
Pressure, Area, Force
P=F/A
Kelvin, Celcius
K=C+273
Boyle’s Law
P1V1 = P2V2
Word done, Distance, Force
WD=FD
Law of reflection
i=r
GPE
mgh
Snell’s law
n1Sin(Ø1) = n2Sin(Ø2)
Critical angle
Sin(c)=1/n
KE
0.5mv^2
Efficiency
Useful energy out/total energy in
Weight, Gravitational field strength, mass
W=mg
Acceleration
a=(v-u)/t
Time period, Frequency
T=1/f
Force, Extension (2)
F=kx or F=-kx
Refractive index
sin(i)/sin(r)
Equation for critical angle
Sin(c)=1/m
M refractive index
C critical angles
Orbital Speed
v=(2πr)/T
Moment
Moment = Fd
h g P ρ
P=ρgh
Braking distance (2)
1) Db=(0.5mv^2)/Fb
2) Db=0.5vt
Thinking distance
D=vt(thinking)
Stopping Distance
D(stopping)=D(thinking)+D(braking)
