物理白痴的問題

幻藍

要幾多時間先可以令200kg 15^oC的steel温度升到200^oC?
steel 的 specific heat capacity 是450 J kg^-1oC^-1




HELP~~~~~~~

SusanCrystal

所需energy
=[200*450*(200-15)] J
=16650000 J

至於要幾多時間．．．要視乎ｈｅａｔｅｒ嘅ｐｏｗｅｒ

pokevect

Originally posted by questerli at 2005-1-16 06:55 PM:
看似很難，不知form幾才教？

form 4

Echo21

Originally posted by questerli at 2005-1-17 12:40:
好彩，出年才學。

Form 3都有可能會
看學校而定

pokevect

Originally posted by Echo21 at 2005-1-17 04:49 PM:

Form 3都有可能會
看學校而定

會考課程黎架bor~~~

oscar

Originally posted by pokevect at 2005-1-17 17:07:


會考課程黎架bor~~~

其實中三既理科三寶課程係prepare你地form4理科既課程~
form3教得快d，咁中四理科就skip多d~

幻藍

Originally posted by SusanCrystal at 2005-1-16 06:33 PM:
所需energy
=[200*450*(200-15)] J
=16650000 J

至於要幾多時間．．．要視乎ｈｅａｔｅｒ嘅ｐｏｗｅｒ

係lor~
我就係因為冇P所以唔識

JOHNLAM17

係唔係教heat果時教埋