equations Flashcards
speed
=d/t
acceleration
=v-u/t
weight
=m x g
density
mass/volume
hookes law
f = kx (k is constant)
force
=m x a
moment
=force x perpendicular distance
momentum
= mass x velocity
kinetic energy
= (1/2)x (mass) x (velocity)
gravitational potential energy
mass x gravity x change in height
efficiency
= output/input x100
pressure
force / area
pressure liquid
p = hpg
work
= force x distance
power
= energy/time
thermal capacity or heat energy
=mass x specific heat capacity x change in temperature
heat energy (Q)
=mass x latent heat
velocity of wave
=frequency x wavelength (lambda)
refractive index (n)
=sin i/sin r
I (current
= Q(charge)/t (time)
R (resistance
= V(voltage)/I(current)
Vs(volts in secondary)/Vp(volts in secondary)
=Ns(number of turns in secondary)/Np(number of turns in primary)
Ip(current in primary) x Vp(volts in primary)
=Is(current in secondary)x Is(current in primary)
