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WXYZ conversions

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

lnW = S/k (isolated, Boltzman k)

ln 1/W_random = ln 1/r^N(A)

= ΔS/k

= -N_A 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

≈ -PV_gas

= -nRT

= -nRΔT

= -nRT ∙ ln (V₂/V₁)

= q - ΔE

= P_opp(ΔV)

= (force_opp/area) ΔV

= force ∙ distance

= P_opp(V_F - V_i)

= q - ΔH + P_opp (ΔV)

= ΔU - q

= ΔU (adiabatic, 0Δq)

= 0 (isolated, q = 0, ΔU = 0)

= 0 (const. V)

= -P_surrΔV (irrev.)

= -P_surrAΔx (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)

X_l = load inductive reactance

X_a = M√k_a

= [H⁺]

X_A = kP_A

= PP_A/P⁰_A

= pP_A/P⁰_A

= pP_A/pP⁰_A

= r_evap/k_evap

= PP_Ak_c/k_e

= pP_Ak_c/k_e

X_s = 2ndary induct. reactance

⁰X_(dissoc.) = nX_(dissoc.)/nX

= n/liter

= %x dissoc.

[X_dissoc.] = 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 = 10^x

x log 4 = 4^x

ln x = 2.303 log x

-x log 10 = 10^-x

x-2 log 10 = 10^x-2

x-rays = 10^15.5-10^20.5 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

= En²h²/2²me⁴

Z = impedance

Z_sl = impedance of transformer with load

= (R_s + R_l) + j(X_s + X_l)

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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