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1. . 2. 3. . 4. .

(U = A/q) =Uq, q = It, : =Ult, =I2Rt = U2/R t.

, , N = A/t, , N =UI = I2R = U2/R.

X. , . , , , , .

Q =I 2Rt.

, , (. 18). , , , .

, , , , ( ) . , . , . ξ= A/q

t q. : A = ξ q. q = It, A = ξ It. , R , . : Q =I2Rt +I2rt. = Q. , ξ=IR +Ir. . , . : I = ξ /(R +r). . , . . , , .

2

0,033 1,35 ×106 455. ( 273 , 101300)?

: V1=0,03 3 1=1,35×106 t1 = 455 2 = 101300 2 = 273 R= 8,31 / ×
V =?

:

.:

pV = m / M × RT

, .

: 1V1= m / M × RT1

: 2V2 = m / M × RT2

, :

1V1/ 2V2 = T1/ T2

: 1V1 T2= 2V2 T1

:V2 = 1V1 T2 / 2 T1

: t1 = 455 1( )

1 = t1 +273 = 455+273=728 ()

:

V2 = 1,35×106×0,03×273 / 101300×728 ≈ 0,15 (3)

: V2≈ 0,15 (3)

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