is-
is- :
(p = const) (),
(t = const) (),
(v = const) ().
() . =1. .
ջ - , Y - .
, . , . .
i, s- (x = const) (v = const). , .
p t. , , . p x.
, , x = const.
is-
. .
: = 120 , t = 550. , , 400 .
.
is- ( - ). .
, . is-:
, 120 , 550 . , .
. , ( Y) ( ջ).
i = ~3480 /, S = 6,65 /()
. , , 2 = 400 . , is- . 1 ( ) 400 .
2. . 50 . , , i = 3200 /.
. : (Δu), (l, l) . . ( ), .