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  1. ... will move faster and further than solid and liquids. They expands more. 想像一下用膠水粘著的波子和普通幾粒波子. 你彈一下它們, 哪個會分得...

  2. ... from atom . so it has movement of atom to made it can expand and contract. 2008-02-05 00:28:42 補充: 英文文法唔知有冇錯

  3. Let L cm be the length of the iron rod hence, expansion of the iron rod from 10 deg.C to 100 deg.C = L x (12 x 10^-6) x (100-10) cm = 12 x 90 x 10^-6 L cm Length of brass rod = (L-14) cm expansion of brass rod from 10 to 100 deg.C = (L-14) x 19x10^-6 x 90 cm...

  4. ...: 我想問一下..其實increase in ke係咪令到個solid expand ? The solid expands because of the increase of...true. As explained in the above question, solid expands is a result of the increase of average molecular separation...

  5. Yes, it will expand upon increasing temperature. Do guys above who claim...of this structure in freezing. That is why water expand with decreasing temperature from 4 C to 0 C. ...

  6. 我唔肯定岩唔岩!!just my physical concept Q1. 因為熱水被加熱後,水中的一些礦物已比蒸發!! 所以熱水的純水度係比凍水的為高!!! 因此熱水個freeze point係比凍水為高! 即eg.凍水要0度先開始結冰!!!熱水就只需2-4C就可結冰!! 所以熱水係會比凍水快少少結成冰...

  7. ...2008-12-08 22:50:41 補充: 如果有壺熱湯放在室溫下,湯上層既空氣會被加熱, expand .再上層既空氣就是未被加熱ge。由於重力影響,熱空氣和未被加熱的空氣會一齊...

  8. You did not give all the conditions under which the gas expands . The crucial point is whether the gas is thermally isolated...

  9. 1a) In this case, the gas expands with △V = 5 dm3 since the volume is doubled. Hence work...

  10. ... did he mean??? Mercury or alcohol expands on heating and contracts on cooling...補充: 7. A simple explanation is that water expands in volume when it forms ice because of crystalization...