BOYDWAN

Originally posted by d228216 at 2007-10-27 20:33:

賓記R仔...野野過百

百頭定百尾先？
如果百頭都合理，波記寶記都要喇~

BOYDWAN

Originally posted by 小小康 at 2007-10-27 20:49:
呃POST呃得咁明顯
http://www.26fun.com/bbs/viewthr ... p;page=1#pid2390608

佢-1 啦~

小小康

Originally posted by BOYDWAN at 2007-10-27 21:08:
百頭定百尾先？
如果百頭都合理，波記寶記都要喇~

如果百尾，不如補多少少買馬仔

Originally posted by BOYDWAN at 2007-10-27 21:09:
佢-1 啦~

CHECSS

一個質量為0.1kg的銅罐,內盛25度、質量為1.2kg的水。
若把一個質量為0.1kg,在焗爐中放置了一段長時間的銅塊,
急速投入水中,水溫會升高至45度 。設銅的比熱容量為400。
(a) 求水所獲得的能量?

唔識答 ....................

自由神

Originally posted by CHECSS at 2007-10-27 09:27 PM:
一個質量為0.1kg的銅罐,內盛25度、質...

唔係有公式直代嫁咩？

題目有無假設無heat loss to the surrounding先？

CHECSS

Originally posted by 自由神 at 2007/10/27 21:31:

唔係有公式直代嫁咩？

題目有無假設無heat loss to the surrounding先？

無
我的方法>(1.2)(4200)(45-25) ................... 但唔知岩唔岩

[ Last edited by CHECSS on 2007-10-27 at 09:36 PM ]

CHECSS

Originally posted by d228216 at 2007/10/27 20:56:

CHECSS

Originally posted by BOYDWAN at 2007/10/27 21:09:



佢-1 啦~

ckyckk

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CHECSS

Originally posted by ckyckk at 2007/10/27 21:45:
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