Formulas Flashcards
Average Speed =
total distance gone / total time taken
Speed or Velocity =
gradient of speed - time graph
Acceleration =
(v-u) / t
Distance gone =
area under velocity - time graph
Force =
mass x acceleration
Weight =
mass x g
Efficiency =
Useful energy out/ Total energy in x100
Work =
Force x distance (in direction of force)
Power =
work done or energy used up (Joules) / time take (seconds)
GPE =
mass x g x height (change)
KE =
1/2 x mass x speed^2
Like Charges =
Repel
Unlike charges =
Attract
Charged objects will =
Attract uncharged ones
Charge =
Current x time (seconds)
Voltage =
Current x resistance
Energy =
Voltage x charge
Velocity =
(2π x orbital radius) / Time period
Life cycle of stars same size as our sun =
Nebula, main sequence, red giant, white dwarf
Life cycle of stars at least 1.7 x our sun =
Nebula, main sequence, red supergiant, supernova, neutron star or black whole (depending on size)
Blue =
30 000 K
White =
7500 K
Yellow =
6000 K
Orange =
4000 K
Red =
3000 K
Kelvin to Celsius =
-273
Celsius to Kelvin =
+273
Pressure (Solid) =
Force / Area
Pressure (Liquid) =
gravity x density x depth
Boyle’s Law =
P1 x V1 = P2 x V2
