Physics full equations in symbol format (igcse physics edexcel)

v=d/t

Average speed

d=vt

Distance travelled at constant speed

t=d/v

Time taken

a=(v-u)/t

Acceleration

v=u+at

Final velocity

v²=u²+2as

Final speed squared equation

F=ma

Force

m=F/a

Mass from force and acceleration

a=F/m

Acceleration from force and mass

W=mg

Weight

m=W/g

Mass from weight

g=W/m

Gravitational field strength

p=mv

Momentum

F=(mv-mu)/t

Force from change in momentum

F=Δp/t

Force from rate of change of momentum

M=Fd

Moment of a force

d=M/F

Perpendicular distance from pivot

F=M/d

Force from moment

ρ=m/V

Density

m=ρV

Mass from density and volume

V=m/ρ

Volume from density and mass

p=F/A

Pressure

F=pA

Force from pressure

A=F/p

Area from pressure

p=ρgh

Pressure difference in a liquid

h=p/(ρg)

Depth from liquid pressure

W=Fd

Work done

E=W

Energy transferred equals work done

KE=1/2mv²

Kinetic energy

GPE=mgh

Gravitational potential energy

P=W/t

Power

P=E/t

Power from energy transferred

E=Pt

Energy transferred from power and time

efficiency=useful energy output/total energy input

Efficiency as a ratio

efficiency=(useful energy output/total energy input)×100

Percentage efficiency

v=fλ

Wave speed

f=v/λ

Frequency from wave speed and wavelength

λ=v/f

Wavelength

f=1/T

Frequency from time period

T=1/f

Time period

n=sin(i)/sin(r)

Refractive index

sin(c)=1/n

Critical angle relationship

n=1/sin(c)

Refractive index from critical angle

P=IV

Electrical power

I=P/V

Current from power and voltage

V=P/I

Voltage from power and current

E=IVt

Electrical energy transferred

I=E/(Vt)

Current from electrical energy

V=E/(It)

Voltage from electrical energy

t=E/(IV)

Time from electrical energy

V=IR

Ohm's law

I=V/R

Current from voltage and resistance

R=V/I

Resistance

Q=It

Electrical charge

I=Q/t

Current from charge

t=Q/I

Time from charge and current

E=QV

Electrical energy transferred from charge and voltage

Q=E/V

Charge from energy and voltage

V=E/Q

Voltage from energy and charge

P=I²R

Electrical power using current and resistance

P=V²/R

Electrical power using voltage and resistance

R=P/I²

Resistance from power and current

E=mcΔT

Change in thermal energy

ΔT=E/(mc)

Change in temperature

m=E/(cΔT)

Mass from thermal energy change

c=E/(mΔT)

Specific heat capacity

Vp/Vs=Np/Ns

Transformer voltage and turns ratio

Vs/Vp=Ns/Np

Transformer secondary voltage ratio

VinIin=VoutIout

Ideal transformer power equation

Iin/Iout=Vin/Vout

Ideal transformer current ratio

Pinput=Poutput

Ideal transformer power

p1/T1=p2/T2

Gas pressure and absolute temperature at constant volume

p1V1=p2V2

Gas pressure and volume at constant temperature

v=2πr/T

Orbital speed

T=2πr/v

Orbital time period

z=Δλ/λ₀

Redshift

v/c=Δλ/λ₀

Recessional velocity and redshift relationship

v=cz

Recessional velocity from redshift

Δλ=zλ₀

Change in wavelength from redshift