Re: [問題] 質平第 5.10 題作業... 不懂題目ㄝ

[zaza (5/1活大化工之夜)]

※ 引述《keepgoing (5/1活大化工之夜)》之銘言：
:     A stream of air enters a 7.50-cm ID pipe at a velocity of 60.0 m/s at 27'C
: and 1.80 bar (gauge). At a point down stream, the air flows through a 5.00-cm
: ID pipe at 60'C and 1.53 bar (gauge). What is the velocity of the gas at this
: point?
我的想法.....


         ^
因為    PV = RT

         ^
        PV
所以  ------ = R = 定值
        T

 ^
 V = (πr^2) * v(速度)


答案算出來沒錯

不知道這樣寫對不對

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