ALL PHYSICS EQUATIONS (including ones given in the exam)

the ones given in the exam will be highlighted for you gorgeous people <3

weight (W)

weight (W)

mass (m)x gravitational field strength (g)

work done (W)

force (F) x distance (s) (moved along the line of action of a force)

force (F)

spring constant (k) x extension (e)

moment of a force (M)

force (F) x distance (d) (perpendicular to the direction of the force)

pressure (p)

force normal to a surface (F) / area of that surface (A)

distance travelled (s)

speed (v) x time (t)

acceleration (a)

change in velocity (△v) / time taken (t)

=

final velocity - initial velocity (v-u) / time taken (t)

resultant force (F)

mass (m) x acceleration (a)

momentum (p)

mass (m) x velocity (v)

pressure (p)

height of column (h) x density of liquid (ρ) gravitational field strength (g)

(final velocity)² - (initial velocity)²

2 x acceleration (a) x distance (s)

force (F)

change in momentum (m△v) / time taken (t)

force (f)

magnetic flux density (B) x current (I) x length of conductor in magnetic field (L)

F=BIL

primary and secondary coils

pd across primary coil/pd across secondary coil = turns in primary coil/ turns in secondary coil

pd in primary and secondary coils

pd in primary x current across primary = pd across secondary x current in secondary

wave speed (v)

frequency (f) x wavelength (λ)

v=fλ

Time period (T)

1/frequency (f)

T= 1/f

magnification (M)

image height (himage)/ object height (hobject)

himage/hobject

density (funky looking p)

mass(m)/volume (v)

change in thermal energy (△E)

mass (m) x specific heat capacity (c ) x temperature change (△θ)

△E=mc△θ

thermal energy for a change in state (E)

mass (m) x specific latent heat (L)

E=mL

for gas: pressure x volume = constant

pv= constant

charge flow (Q)

current x time (Ixt)

potential difference (V)

current x resistance (I x R)

total resistance (Rt)

resistance of component 1 + resistance of component 2

power 1 (P)

current x potential difference (I x V)

power 2 (P)

(current)²x resistance (I² x R)

Energy transferred 1 (E)

power x time (P x t)

Energy transferred 2 (E)

charge flow x potential difference (Q x V)

Kinetic energy

kinetic energy = 1/2 × mass × speed²

Gravitational potential energy

mass x gravitational field strength x height

power 1

work done / time taken

power 2

energy transferred/ time taken

efficiency 1

useful energy output/ total energy input

efficiency 2

useful power output/ total power input

elastic potential energy

0.5 x spring constant x (extension)²

change in thermal energy

mass x specific heat capacity x temperature change