Topic 1,2,3,4 Formulas Flashcards
Work done (W)
W=Fs
Work done = force x distance
Kinetic energy (Ek)
Ek=1/2mv^2
Kinetic energy = 1/2 x mass x velocity^2
Gravitational potential energy (Ep)
Ep=mgh
Gravitational potential energy = mass x gravity x height
Power (P)
P=E/t P= W/t
Power = energy/time
Power = Work done/time
Efficiency
Eff=Out/in
Efficiency = useful output/total input
Charge (Q)
Q=It
Charge = current x time
Potential difference (V)
V=IR
Potential difference = current x resistance
Power (P) [Electricity]
P=I^2R
Power = Current^2 x resistance
Energy transferred (E)
E=QV
Energy transferred = charge x potential difference
Density (ρ)
ρ=m/V
Desnity = mass/volume
Power (P) [No resistance]
P=VI
Power = potential difference x current
Energy transferred (E) [Includes power]
E=Pt
Energy transferred = power x time
