PreQ Physics - Term 3 Formulas
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19 Terms
current formula
I = Q/t
Voltage formula
V = IR
Resistance formula
R = (Rho * length) / Current
Fleming’s hand rules
Thumb = Motion
Second = Field
Third = Current
Left hand rule vs right hand rule
Left for Motors, right for generators
Total current in a series circuit
i1 = i2
emf formula
E = W/Q
total voltage in a series circuit
Vt = v + v + v…
Total resistance in a parallel circuit
1/Rt = 1/r + 1/r + 1/r …
Total current in parallel
It = i + i + i…
Total resistance in a series circuit
Rt = r + r + r…
Orbital speed formula (general)
v = 2pir/t
Gravitational field strength formula
g = f/m
Centripetal force formula
mv2/r
Gravitational attraction between two masses
Fg = GMm/r2
Orbital speed formula (with Gravity)
sqr(GM/r)
Hubble constant number
2.3×10^-18/s
Hubble constant formula
H0 = v/d
speed of light
3×10^8m/s
Note 
Flashcards (76)