[2022] DSE 物理科Physics討論區

君夫人陽貨欲

175 回覆
2 Like 1 Dislike
arrrkk 2022-05-04 23:36:37
今年仲易過上年我覺得未必攞到
有女青頭仔 2022-05-05 10:21:03
應該過半機會唔比分除非今年Marking Scheme 真係好鬆
蕭蕭敬 2022-05-05 14:29:25
aluminum邊係降低radiation
control set up嘅速度喺中間
CupY, CupZ一個一定跌落快啲一個一定跌慢啲
唔會兩個都reduce heat loss
蕭蕭敬 2022-05-05 14:32:22
所以我就寫aluminum loss faster, because aluminum promote heat loss by infrared radiation
愛因_絲打 2022-05-05 15:04:03
天水圍麻雀獸 2022-05-05 18:57:46
2a ii 個N會唔會有唔同, Number of particle = mol x Na 。B既mass細過A mol咪變左
月巴B 2022-05-05 19:07:00
天水圍麻雀獸 2022-05-05 19:10:37
3c iii should be 27.3 deg?

F= mg sin θ For using F= 6.21N.

唔一定正確
月巴B 2022-05-05 19:14:07
天水圍麻雀獸 2022-05-05 19:14:13
A straight line 係咪 cut through Y=0.5 and X =20
月巴B 2022-05-05 19:15:09
係啊 part c樓上岩
天水圍麻雀獸 2022-05-05 19:17:15
PV= nRT where n = N/ Na then

我見佢俾埋N Na mass, 自然就諗 我打出黎嗰樣野
月巴B 2022-05-05 19:21:07
n N Na 邊一個關mass/molar mass事
天水圍麻雀獸 2022-05-05 19:24:00


可能我錯?
愛因_絲打 2022-05-05 19:40:39
係喎 睇錯數
愛因_絲打 2022-05-05 19:48:24
tanθ = Fc/mg
月巴B 2022-05-05 20:41:14
如果無估錯 我覺得你似誤解左Na
緬梔花茶 2022-05-05 20:59:52
R sin = Fc
R cos = mg
Tan = Fc/mg
緬梔花茶 2022-05-05 21:03:21
nRT is constant as temperature is the same
So in two cases both have the same number of particles

The question does NOT mention the gas has different mass but you should know it.
緬梔花茶 2022-05-05 21:06:33
I guess he/she misleads by the mass of two gases are the same
So mass /molar mass give different mole and hence different N
天水圍麻雀獸 2022-05-05 23:04:32


睇嚟真係我誤會咗啲嘢
Offer_God_Offer 2022-05-05 23:05:12
有冇Mc 卷
不反共通知書 2022-05-05 23:12:11
全中似係
不反共通知書 2022-05-05 23:15:36
可唔可以講多少少
佢哋R唔一樣
T一樣 w一樣
點解Rw^2 唔係一樣
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