Formula’s Flashcards
Density formula
D = mass / volume
Weight formula
W = mass x gravitational pull
Average speed
Average speed = Total distance / total time
Acceleration formula
A = (V-I) / time
Resultant force formula
F = mass x acceleration
Moment formula
moment = force x distance
Work done formula
WD = Force x distance
Kinetic energy formula
KE = 1/2 x mass x speed^2
Kinetic energy formula
KE = 1/2 x mass x speed^2
Gravitational potential energy formula
GPE = mass x gravitational pull x height
Pressure formula
pressure = force / area
Refractive index
n = (sin i) / (sin r)
Power formula
Power = Work done / time = Energy / time = force x velocity
Wave speed formula
v = frequency x wavelength
Frequency formula
Frequency = 1 / time
speed of sound (direct measurement)
speed of sound = distance / time
speed of sound (By echo)
speed of sound = (2 x distance) / time
Amount of charge
Q = Current x time (Q = IT)
Current formula
Current = Potential difference / resistance
Total Resistance formula (In series)
R = R1 + R2 + R3…
Total resistance formula (In parallel)
R = (1/R1 + 1/R2…)^ -1
Resistance formula (cross sectional area)
R = (resistivity of wire x length) / area
Work done (electrical)
WD = potential difference x charge
