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WXYZ conversions

 

W = # realizations/macroscopic state (const. T,P,d,...)

lnW = S/k (isolated, Boltzman k)

ln 1/Wrandom = ln 1/rN(A)

       = ΔS/k

       = -NA ln r

ln W2/W1 = ΔS/k

         = 0 (00K)

w = m

     = coil width

w = weber

     = 108 maxwells

     = magn. flux inducing an avg. emf of 1V in 1 sec. in a conductor

     = M/F

w = watt

        = ItΔΦ

        = ΔG

        = EI (DC, not motors)

        = E2/R (DC, not motors

        = I2R (DC, not motors)

        = -nFE

        = Js

        = J/sec.

        = .00134 hp

        = 107 erg/sec.

        = 14 cal/min.

        = ItE

        = 746 Hp/eff (motor)

w = work

     = Internal Energy - Heat

     = + (vs. sys. by surroundings)

     = - (vs. surr. by system)

     = -q (ΔU=0, expans., id.g., PV work only)

     = -PΔV

     = PV

     ≈ -PVgas

     = -nRT

     = -nRΔT

     = -nRT ln (V2/V1)

     = q - ΔE

     = Popp(ΔV)

     = (forceopp/area) ΔV

     = force ∙ distance

     = Popp(VF - Vi)

     = q - ΔH + Popp (ΔV)

     = ΔU - q

     = ΔU (adiabatic, 0Δq)

     = 0 (isolated, q = 0, ΔU = 0)

     = 0 (const. V)

     = -PsurrΔV (irrev.)

     = -PsurrAΔx (irrev.)

     = -P1ΔV1 - P2ΔV2

     = -PV ln V2/V1 (id.g., rev., isothermal)

-w = QΔΦ

        = nFE

        = -ΔG

water = H2O

watt = w

      = Hp/746

      = (kg m2)/s3

wave # = 1/λ

       = cm

wavelength = λ

weber = magnetic flux inducing an average emf of 1 volt in one second in conductor

           = 108 maxwells

           = Flux/turn

           = 1 volt/sec emf induced

week = 7 days

          = year/52

weigh = peser

weight = talenton

       = thekel

       = baros

work = w

       = PV

       = Int. E - Ht

       = force x distance

 

X = reactance

X = n/(g in sol'n)

Xl = load inductive reactance

Xa = M√ka

      = [H+]

XA = kPA

        = PPA/P0A

        = pPA/P0A

        = pPA/pP0A

        = revap/kevap

        = PPAkc/ke

        = pPAkc/ke

Xs = 2ndary induct. reactance

0X(dissoc.) = nX(dissoc.)/nX

        = n/liter

        = %x dissoc.

[Xdissoc.] = k/[H+]

         = / x dissoc. ∙ [x}

/x dissoc. = [x dissoc.]/[x]

x = times

x = distance penetrated

x = point on x axis

x axis = horizontal

x = any number

       = [-b+-√(b2 - 4ac)]/2a ( if ax2 + bx + c = 0)

x log 10 = 10x

x log 4 = 4x

ln x = 2.303 log x

-x log 10 = 10-x

x-2 log 10 = 10x-2

x-rays = 1015.5-1020.5 Hz

XV = decemvir

XVV = quindecemvir

xy(solid) ↔ x+ + y-

 

y = point on y axis

y = mx

y = mx + b

y axis = vertical

yard = yd

       = 3 feet

       = 36 inches

       = .914 meter

       = .005682 miles

       = m/1.09

yd2 = 9 ft2

       = rod2/30.25

       = .84 m2

       = m2/1.19

yd3 = cubic yard

       = 27 ft3

       = .76 m3

year = anno

      = 12 months

      = century/100

 

Z = zeta

Z = atomic #

     = mv2r/e2

     = vnh/e22

Z = associated equipment depreciation (% capital cost)

Z2 = e4

      = En2h2/22me4

Z = impedance

Zsl = impedance of transformer with load

     = (Rs + Rl) + j(Xs + Xl)

z axis = tangential

zehn (G.) = ten

zehnte, -r (G.) = 1/10

zentner = 100 wght

zero = zero (F.)

        = meden (Gr.)

zero (F.) = zero

zuerst (G.) = 1st

zwanzig (G) = twenty

zwanzigste, -r (G.)

zwei (G.) = two

zweit (G.) = 2nd

zwolf (G.) = twelve

zwolfte, -r (G.) = 1/12

 

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