أكاديميا - كولنز - معاجم الجيب العلمية - الفيزياء - الجدول 3 التعابير _٣_

Academia - Collins - Pocket Scientific Dictionaries - Physics - English - French - Arabic - Appendix - Table 3 Expressions _3_


Impedance (unit: ohm)
Resistance(R)

(Definition) R = V/I

(for resistors in series)
R = R1+ R2+ R3

(for resistors in parallel)
1/R = 1/R1+ 1/R2+ 1/R3

(and Q is the resistivity)
R = Q/A

Resistivity (unit: ohm meter)
Resistivity(p)

(Definition) Q = RA/I

Source impedance (unit: ohm)
Source resistance (r)

(From the definition of resistance) r = E/I-R

Latent heat capacity (unit: joules/kg)
Specific latent heat (L)

(Definition) L = W/m

Specific heat capacity (unit: joules/kgK)
Specific thermal capacity (c)

(Definition) C = W/mθ

Speed ​​(unit: m/s) Speed ​​(c)

(Definition) C = I/t

(for a wave) C = д

Heat capacity (unit: joule/kelvin)
Thermal capacity

(Definition) W/θ=

(And C is the specific heat capacity)
= mC

Temperature (unit: Kelvin)
Temperature(T)

(Ideal gas equation) T = kpV

(Energy of temperature change) θ = W/mC

Velocity (unit: m/s) Velocity (v)

(Definition) v = s/t

(Equation of motion) v = u + at

(Equation of motion) v² = u²+ 2as

(And P is power) v = P/F

Voltage (unit: volt)

(Definition) V = W/Q

(Definition of resistance) V = IR

(For capacitors) V = Q/C

(Definition) V2 = V1N2/N1

Volume (unit: m3) Volume (V)

(for a cube) V = I3

(for building stone - cuboid)
V = Idh

(for a sphere) V = 4/3 (πr3)

(for a cylinder) V = πr²h

(For an ideal gas) V = kT/P

Wavelength (unit: meter)
Wavelength(λ)

(From the wave equation) λ = C/V

(and T is the cycle) λ = CT

(And I is the length of the (open) string or pipe)
λ = 2I

For a (closed) tube) λ = 4I/3

Weight (Unit: Newton) Weight (W)

(From definition of gravity) W = mg

Work (unit: joule)
Work (W) (unit: J)

(Definition) W=Fs