6

6.1. , Mathcad

6.2.

SI ( )

MKS (--)

CGS (--)

U.S. (, )

6.3.

, ( . . 1.13 13).

, : := 1000 J, := mho, := m ..

UnitsOf(Var), (1), Var .

6.1. , Mathcad

(activity)

Bq

(time)

day (), hr (), min, s, sec yr ()

(dynamic viscosity)

poise ()

(kinematic viscosity)

stokes ()

(pressure)

atm ( ), in_Hg ( . .), Pa, psi ( ) torr ( . .)

(length)

cm, ft (), in (), km, m, mi (), mm yd ()

(dose)

Gy Sv

(capacitance)

F, farad, mF, nF, pF statfarad

(charge)

, coul statcoul

(inductance)

H, henry, mH, mH stathenry

(magnetic flux density)

gauss, stattesla, T tesla

(substance)

mole ()

(magnetic flux)

statweber, Wb weber

(mass)

gm, kg, lb (), mg, oz (), slug (), ton ( ) tonne ( )

(power)

Hp[1], kW, W, watt

(magnetic field strange)

Oe oersted

(volume)

fl_oz, gal, L, liter mL

(illuminosity)

Lx

(area)

acre hectare

(potential)

kV, KV, mV, statvolt, V volt

(conductance)

mho, S, siemens statsiemens

(force)

dyne, kgf, lbf, N newton

(luminosity)

cd Im

(velocity)

c, kph mph

(resistance)

kW, MW, ohm, statohm W

(temperature)

K R

(current)

A, amp, KA, mA, mA statamp

(angular)

deg, rad str

(acceleration)

g ( )

(frequency)

GHz, Hz, kHz, KHz MHz

(energy)

BTU[2], cal[3], erg, J, joule kcal

6.2.

: m=1L , m .

:

L lenght () Q charge () T time () M mass () K temperature () U luminosity () S mole ( )

Mathcad 6 , Mathcad 7 8 .

, , , . .

, , , , .

SI ( )

m (), kg (), s (), A (), K (), cd (), N (),

rad=1 deg=(p /180)×rad str=1×str

cm=0.01×m km=1000×m mm=0.001×m ft=0.3048×m in=2.54×m yd=3×ft mi=5280×ft

gm=10-3×kg tonne=1000×kg lb=453.59237×gm mg=10-3×gm ton=2000×lb slug=32.174×lb oz=lb/16

min=60×sec hr=3600×sec day=24×hr yr=365.2422×day

,

hectare=104×m2 acre=4840×yd2 liter=0.001×m3 mL=10-3×L fl_oz=29.57353×cm3 gal=128×fl_oz

,

mph=mi/hr kph=km/hr g=9.80665×(m/s2)

, ,

N=kg×m/s2 dyne=10-5×N lbf=g×lb kgf=g×kg J=N×m erg=10-7×J cal=4.1868×J kcal=1000×cal BTU=1.05506×103×J W=J/s kW=1000×W hp=550×(ft×lbf)/s

,

Pa=N/m2 psi=lbf/in2 atm=1.01325×105×Pa in_Hg=3.38638×103×Pa torr=1.33322×102×Pa stokes=10-4×m2/s poise=0.1×Pa×s

C=A×s V=J/C mV=10-3×V kV=103×volt W=V/A kW=103×W MW=106W S=1/W mho=1/W H=(V/A)×s mH=10-6H mH=10-3×H mA=10-6×A mA=10-3×A kA=103×A F=C/V pF=10-12×F nF=10-9×F mF=10-6×F Wb=V×s Oe=(1000/(4×p))×A/m T=Wb/m2 gauss=10-4×T

Hz=1/s kHz=103×Hz MHz=106×Hz GHz=109×Hz Bq=1/s

R=0.556×K

Gy=J/kg Sv=J/kg

,

lm=cd×str lx=cd×str/m2

MKS (--)

m (), kg (), sec (), coul (), K (),

rad=1 deg=(p /180)×rad

cm=0.01×m km=1000×m mm=0.001×m ft=0.3048×m in=2.54×m yd=3×ft mi=5280×ft

gm=10-3×kg tonne=1000×kg lb=453.59237×gm mg=10-3×gm ton=2000×lb slug=32.174×lb oz=lb/16

min=60×sec hr=3600×sec day=24×hr yr=365.2422×day

,

hectare=104×m2 acre=4840×yd2 liter=(0.1×m)3 mL=10-3×liter fl_oz=29.57353×cm3 gal=128×fl_oz

,

mph=mi/hr kph=km/hr g=9.80665×(m/sec2)

, ,

newton=kg×m/sec2 dyne=10-5×newton lbf=g×lb kgf=g×kg joule=newton×m erg=10-7×joule cal=4.1868×joule kcal=1000×cal BTU=1.05506×103×joule watt=joule/sec kW=1000×watt hp=550×(ft×lbf)/sec

,

Pa=newton/m2 psi=lbf/in2 atm=1.01325×105×Pa in_Hg=3.38638×103×Pa torr=1.33322×102×Pa stokes=10-4×m2/sec poise=0.1×Pa×sec

volt=watt/amp mV=10-3×volt KV=103×volt ohm=volt/amp mho=1/ohm siemens=1/ohm W=ohm W=103×ohm MW=106×ohm henry=weber/amp mH=10-3×henry mH=10-6×henry amp=coul/sec mA=10-6×amp mA=10-3×amp KA=103×amp farad=coul/volt pF=10-12×farad nF=10-9×farad mF=10-6×farad weber=volt×sec oersted=1000×amp/((4×p)×m) tesla=weber/m2 gauss=10-4×tesla

Hz=1/sec KHz=103×Hz MHz=106×Hz GHz=109×Hz

R=0.556×K

CGS (--)

cm (), gm (), sec () coul (), K (),

rad=1 deg=(p /180)×rad

m=100×cm km=1000×m mm=0.1×cm ft=30.48×cm in=2.54×m yd=3×ft mi=5280×ft

kg=1000×gm tonne=1000×kg lb=453.59237×gm mg=10-3×gm ton=2000×lb slug=32.174×lb oz=lb/16

min=60×sec hr=3600×sec day=24×hr yr=365.2422×day

,

hectare=104×m2 acre=4840×yd2 liter=1000×cm3 mL=cm3 fl_oz=29.57353×cm3 gal=128×fl_oz

,

mph=mi/hr kph=km/hr g=980.665×(cm/sec2) c=2.997925×1010×cm/sec c_=c×sec/m

, ,

dyne=gm×cm/sec2 newton=105×dyne lbf=g×lb kgf=g×kg erg=dyne×cm joule=107×erg cal=4.1868×107erg kcal=1000×cal BTU=1.05506×1010×erg watt=joule/sec hp=550×(ft×lbf)/sec kW=1000×watt

,

Pa=10×dyne/cm2 psi=lbf/in2 atm=1.01325×105×Pa torr=1.33322×102×Pa in_Hg=3.386388×103×Pa stokes=cm2/sec poise=0.1×Pa×sec

CGS, , . - , .

statamp=dyne0.5×cm×sec-1 statcoul=dyne0.5×cm statvolt=dyne0.5 statohm=sec×cm-1 statsiemens=cm×sec-1 statfarad=cm statweber=dyne0.5×cm stathenry=sec2×cm-1 stattesla=dyne0.5×sec-2×cm

Hz=1/sec kHz=1000×Hz MHz=106×Hz GHz=109×Hz

R=0.556×K

amp=c_/10×statamp volt=watt/amp ohm=volt/amp coul=amp×sec farad=coul/volt henry=volt×sec/amp

U.S. (, )

ft (), lb (), sec (), coul (), K (),

rad=1 deg=(p /180)×rad

in=ft/12 m=ft/0.3048 yd=3×ft cm=0.01×m km=1000×m mm=0.001×m mi=5280×ft

slug=32.174×lb oz=lb/16 ton=2000×lb kg=lb/0.45359237 gm=10-3×kg tonne=1000×kg mg=10-3×gm

min=60×sec hr=3600×sec day=24×hr yr=365.2422×day

,

acre=4840×yd2 hectare=104×m2 liter=(0.1×m)3 mL=10-3×liter fl_oz=29.57353×cm3 gal=128×fl_oz

,

mph=mi/hr kph=km/hr g=32.174×(ft/sec2)

, ,

lbf=g×lb newton=kg×m/sec2 dyne=10-5×newton kgf=g×kg joule=newton×m erg=10-7×joule cal=4.1868×joule kcal=1000×cal BTU=1.05506×103×joule watt=joule/sec hp=550×(ft×lbf)/sec kW=1000×watt

,

psi=lbf/in2 Pa=newton/m2 atm=1.01325×105×Pa torr=1.33322×102×Pa in_Hg=3.38638×103×Pa stokes=cm2/sec poise=0.1×Pa×sec

volt=watt/amp mV=10-3×volt KV=103×volt ohm=volt/amp mho=1/ohm siemens=1/ohm W=ohm W=1000×ohm MW=106×ohm henry=weber/amp mH=10-3×henry mH=10-6×henry amp=coul/sec mA=10-6×amp mA=10-3×amp KA=103×amp farad=coul/volt pF=10-12×farad nF=10-9×farad mF=10-6×farad weber=volt×sec oersted=1000×amp/((4×p)×m) tesla=weber/m2 gauss=10-4×tesla

Hz=1/sec KHz=1000×Hz MHz=106×Hz GHz=109×Hz

R=0.556×K

6.3.

, , .

...

A

()

acre

()

 

amp

()

 

atm

( )

 

Bq

()

 

BTU15, CBTU, BTU, iBTU, mBTU, tBTU,

()

 

cal15, cal20, dcal, cal, mcal tcal

()

 

cd

()

cm

()

 

coul

()

 

day

()

 

deg

()

 

dyne

()

 

erg

()

 

F

()

farad

()

 

fl_oz

( )

 

ft

()

 

g

 

gal

()

 

gauss

()

, MKS (),

GHz

()

 

gm

()

 

Gy

()

H

()

hectare

()

 

henry

()

 

hp, bhp, ehp, mhp, hpUK hp,

( )

 

hr

()

 

Hz

()

 

in

()

 

in_Hg

( )

 

J

()

joule

()

 

KA

()

 

kcal

()

 

K

( )

 

kg

()

 

kgf

( )

 

kHz

()

KHz

()

 

km

()

 

kph

( )

 

kV

()

KV

()

 

kW

()

 

kW

()

L

()

lb

()

 

lbf

( )

 

lm

()

lx

()

liter

()

 

mA

()

 

mF

()

 

mH

()

 

m

()

 

MW

()

 

mA

()

 

mH

()

 

mho

()

 

MHz

()

 

mi

()

 

min

()

 

mg

()

 

mL

()

 

mm

()

 

mole

()

 

mph

( )

 

mV

()

 

N

()

newton

()

 

nF

()

 

Oe

()

oersted

()

MKS (),

ohm

()

 

oz

()

 

Pa

()

 

pF

()

 

poise

()

 

psi

( )

 

R

( )

 

rad

()

 

s

()

S

()

sec

()

 

siemens

()

MKS (),

slug

()

 

statamp

()

CGS ()

statcoul

()

CGS ()

statfarad

()

CGS ()

stathenry

()

CGS ()

statohm

()

CGS ()

statsiemens

()

CGS ()

stattesla

()

CGS ()

statvolt

()

CGS ()

statweber

()

CGS ()

stokes

()

 

str

()

Sv

()

T

()

tesla

()

MKS (),

ton

( )

 

tonne

()

 

torr

( . .)

 

V

()

volt

()

 

W

()

 

W

()

watt

()

 

Wb

()

weber

()

MKS (),

yd

()

 

yr

()

 

 



[1] Mathcad (hp) , bhp ( ), ehp ( ), mph ( ), hpUK ( ) whp ( ).

[2] Mathcad BTU, , , BTU15 (, 15 ), CBTU ( ), IBTU ( ISO), mBTU ( ) tBTU ( ).

[3] cal, Mathcad cal15 (, 15 ), cal20 (, 20 ), dcal ( ), mcal ( ) tcal ( ).