IGCSE Cambridge Physics 0625 physics equations | Quizlet

average speed (m/s)

distance (m) / time (s)

force (N)

mass (kg) x acceleration (m/s²)

acceleration (m/s²)

change in velocity (m/s) / time (s)

density (kg/m³

mass (kg) / volume (m³)

work done (J)

= force (N) x distance moved in direction of force (m)

kinetic energy (J)

½ × mass (kg) × velocity (m/s)

gravitational potential energy (J)

mass (kg) x 9.8 or 10 x height (m)

weight (N)

mass (kg) x gravitational field strength (g) (m/s²)

pressure (Pa)

force (N) / area (m²)

moment (Nm)

force (N) x perpendicular distance from pivot (m)

charge (A)

current (C) x time (s)

voltage (V)

current (A) x resistance (Ω)

electrical power (W)

voltage (V) x current (A)

wave speed (m/s)

frequency (Hz) x wavelength (m)

primary voltage / secondary voltage

primary turns / secondary turns

refractive index (n)

sin i / sin r

sin c

1/n

efficiency (decimal or %)

(useful energy output)/(total energy input)

Spring constant (Nm)=

Force (N) / extension (m)

Power (W) =

Work done (J) / time (s)

Electrical Energy Transferred (J) =

Current (A) x Voltage (V) x time (s)

Electrical Power (for a resistor) =

Current ^2 x Resistance (Ω)

Orbital velocity (m/s) =

2.pi.radius (m) / Orbital period (s)

Ratio of Resistances of potential diver ( R1 / R2) =

V1 / V2

Momentum ( p) =

mass (kg) x velocity (m/s)

Impulse ( change in momentum) =

Force (N) x Time (s) x change

Change in pressure in a liquid =

density x g x change in depth

Gas change with constant Temp: Pressure x Volume =

Constant

Potential Difference =

Work done by charge / Amount of charge

Energy change when heating =

mass x SHC x Temperature change

Critical Angle for Total Internal Reflection : Sin C =

1 / n( refractive index)

Transformer Equation: Vp x Ip =

Vs x Is

Hubble's constant ( H) =

velocity of galaxy / distance to galaxy

Age of Universe ( 1/H) =

distance to galaxy/ velocity of galaxy

Moment (Turning force) =

Force x Perpendicular distance to pivot