Physical equations Flashcards
Weight
mass x gravitational field strength (g)
Work done
force x distance along the line of action of the force (s)
Force applied to a spring
spring constant x extension (e)
Moment of a force (M)
force x distance normal to the direction of force (d)
Pressure (p)
force normal to a surface area(F) / area of that surface area (A)
acceleration (a)
change in velocity (Δv) / time taken (t)
resultant force
mass x acceleration
momentum
mass x velocity
kinetic energy
mass x (speed)2 x 0.5
Gravitational potential energy (Ep)
mass x gravitational field strength x height (h)
Power (P)
energy transferred (E) / time
Power (P)
work done / time
efficiency 1
useful output energy transfer / total input energy transfer
efficiency 2
total power output / total power input
wave speed
frequency x wavelength
charge (Q)
current(I) x time
potential difference (V)
current x resistance (R)
power (p)
potential difference x current
power (resistance)
(current)2 x resistance
energy transferred (E)
power x time
energy transferred (charge)
charge x potential difference
density (p)
mass / volume
magnification
image height / object height
period (T)
1 / frequency
change in thermal energy
mass x specific heat capacity x temperature change
Force
Kgms-2
Work done
Kg m2 s-3
Energy
Kg m2 s-2
Resistance
m2 kg s-3 A-1
