作者undeadfish ()
看板HSNU_1003
標題方頭
時間Fri Nov 19 23:07:49 2010
聽說你氣體動力學很強
幫我解題目
which of the following gases would not be expected to cool as it expands?
答案是He 為什麼?
The root mean square speed of nitrogen molecules in air at 20度C is 511 m/s
in a certain container. If the gas is allowed to expand to twice its original
volume, the root mean square velocity of nitrogen molecules drops to 325 m/s.
Calculate the temperature after the gas has expanded.
答案是154度C 太豪洨了啦
麻煩你了 顆顆
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◆ From: 122.120.140.10
※ 編輯: undeadfish 來自: 122.120.140.10 (11/19 23:08)
推 squarehead:你第二題的答案應該是零下吧? 11/20 00:03
推 squarehead:跟我的答案差一個負號 11/20 00:03
推 squarehead:第一題我不知道~~你要看一下課本 看一下他的定義吧 11/20 00:04
推 squarehead:掰了未~~你好狗腿 11/20 00:05
→ undeadfish:第二題怎麼算啊? 11/20 00:45
→ undeadfish:我第二題也算-154耶 顆顆 11/20 00:47
→ undeadfish:贛我找到了 是沙小Joule–Thomson effect 11/20 01:08