F.3 Physics (urgent) [復制鏈接]

引用第14樓麥精於2007-01-08 21:00發表的“”:
SPECIFIC就有 [表情]
l=E/m

有冇答案?我識但係我唔confirm岩唔岩

引用第13樓abbrian2005於2007-01-08 20:58發表的“”:
有冇答案?我唔confirm岩唔岩

2. 1.25 x 10^6 J kg^-1
3. 29.1°C
4. A mixture of ice and water at 0°C

http://hk.knowledge.yahoo.com/question/?qid=7006102104272

similar question, with answer, for your ref.

ice + water => 0°C

引用第17樓ballballfull於2007-01-08 21:03發表的“”:
http://hk.knowledge.yahoo.com/question/?qid=7006102104272
similar question, with answer, for your ref.
ice + water => 0°C

呢條J3教了我

BUT ALSO THX VERY MUCH

del

有冇人識第一題
我都想知

引用第20樓卡卡....於2007-01-08 21:18發表的“”:
有冇人識第一題
我都想知 [表情]

我都唔明呀.....我阿爸話EVAPORATION係因為有D野可以<100度都得
(條題本來問EVAPORATION同CONDENSATION有咩一樣...)但係佢都唔係CONDENSATION..

第3題差少少

引用第22樓abbrian2005於2007-01-08 21:32發表的“”:
第3題差少少
[表情]

1,2呢?

識既POST左先啦

THX

等陣比番D好友元你

energy of 250g of water at 40°C = energy of Ice cubes of 25g at 0°C

0.25 x capacity of water X(40-T)=0.025xlatent heat of fusion+0.025x capacity of water xT

0.25 x 4200 X(40-T) = 0.025x3.34x10^5+0.025x4200xT

42000-1050T=8350+105T

T=29.1°C

引用第23樓麥精於2007-01-08 21:34發表的“”:
1,2呢? [表情]
識既POST左先啦 [表情] [表情] [表情]
.......

1完全唔識

引用第21樓麥精於2007-01-08 21:21發表的“”:
我都唔明呀.....我阿爸話EVAPORATION係因為有D野可以<100度都得
(條題本來問EVAPORATION同CONDENSATION有咩一樣...)但係佢都唔係CONDENSATION..

等我估下先^_^係關convection 事既

引用第25樓abbrian2005於2007-01-08 21:36發表的“”:
1完全唔識

2?

引用第24樓ｊ摩連奴．狂妄於2007-01-08 21:34發表的“”:
energy of 250g of water at 40°C = energy of Ice cubes of 25g at 0°C
0.25 x capacity of water X(40-T)=0.025xlatent heat of fusion+0.025x capacity of water xT
0.25 x 4200 X(40-T) = 0.025x3.34x10^5+0.025x4200xT
.......

latent heat of fusion
我就係差E個...

引用第27樓麥精於2007-01-08 21:37發表的“”:
2? [表情]

冇時間同埋mass