小卒資訊論壇 - Powered by Discuz! Board

標題: [Phy] DSE2016 phy物理問答區 [打印本頁]

作者: yeungwk91 時間: 2016-2-21 07:41 PM 標題: DSE2016 phy物理問答區

如果有咩關於DSE phy都可以係度問e. g. 考試技巧策略。。。
我每日check幾次

如果多問題，我會拍片放係我youtube channel答qwerties999

作者: Delta123 時間: 2016-2-22 08:07 AM

Very good and support it. I think we can add our comments/suggestions too.

作者: michaelet 時間: 2016-2-22 03:13 PM

請問除左psat paper 之外，有冇坊間既ex. 可以做??
同埋操既次序應該係點??

作者: yeungwk91 時間: 2016-2-22 06:32 PM 標題: 回覆 3# michaelet 的帖子

如果你係F6

CE/AL by topic(只做唔熟嘅topic)
Then
坊間mock
Then
DSE PP 時間許可，做多一次

作者: 物理廢人 時間: 2016-2-28 03:37 PM 標題: 回覆 1# yeungwk91 的帖子

中四遇著個好老師,成個力學(力既簡介至到動量)好似無學過禁,有咩方法追番?求幫手

,啲concept都唔係幾清

作者: yeungwk91 時間: 2016-2-28 05:32 PM 標題: 回覆 5# 物理廢人的帖子

Do you study phy in Chinese?

Here is Chinese note from Taiwan:
http://lsforum.net/board/viewthread.php?tid=167939&highlight=
My youtube video on momentum (1 CE MC)
https://www.youtube.com/watch?v=jt_nwF9gTv4

Or
Do you want my note in Eng version?

Read the textbook once and do some exercises inside
It is easier to learn phy by exercises rather than just talk.

I post more materials later

作者: hiffy 時間: 2016-2-29 07:55 AM

坊間mock有沒推介?

聽講solar幾好但得MC
咁應買MOCK定佢?
利伸: PP做得7788 f6
thank you

作者: yeungwk91 時間: 2016-2-29 01:19 PM 標題: 回覆 7# hiffy 的帖子

I have bought several mocks
I thought Pan Lloyds is the best so far.

As I remember, SOLAR doesnt have mock

作者: bakhan.golden 時間: 2016-3-3 01:20 PM

Aurora Borealis are often observed in skies at high latitudes. When energetic electrons from outerspace collide wit the oxygen atom in the upper atmosphere, the oxygen atoms are excited. The subsequent emission of light is usually green light of wavelength 558nm. The minimum speed of these energetic electrons is of order of magnitude ?
A. 10^(2) ms^(-1)
B. 10^(4) ms^(-1)
C. 10^(6) ms^(-1)
D. 10^(8) ms^(-1)

作者: yeungwk91 時間: 2016-3-3 01:49 PM 標題: 回覆 9# bakhan.golden 的帖子

this Q requires approximation.

KE of electron = energy of the photon

作者: KKcstrike 時間: 2016-3-13 12:32 PM 標題: 回覆 1# yeungwk91 的帖子

What does "Coherent " imply?

作者: yeungwk91 時間: 2016-3-13 11:24 PM

引用:

原帖由 KKcstrike 於 2016-3-13 12:32 PM 發表
What does "Coherent " imply?

I dont know what u mean by "imply.

Coherent sources are sources which are "in phase". such that their motion is always in the same direction.
and then
path diff. = n wavelength => constructive

作者: emmanuelpun 時間: 2016-3-17 09:31 PM 標題: helpp

i did ce and al by topic before i was clear abt those topics but right now i arent
i have done dse pp so should i do all the ce and al by topic again or directly do ce by year?

作者: antonyluk 時間: 2016-3-17 10:30 PM

引用:

原帖由 yeungwk91 於 2016-3-13 11:24 PM 發表

I dont know what u mean by "imply.

Coherent sources are sources which are "in phase". such that their motion is always in the same direction.
and then
path diff. = n wavelength => constructiv ...

Coherent sources do not necessarily mean they are in phase. As long as the two wave sources have constant phase difference, they are said to be coherent. In HKDSE, the two sources can be either in phase or anti-phase. Students are expected to know how to convert between path difference and phase difference for both bases.

In order to have an observable interference pattern, the interfering waves must be coherent, i.e. they must have constant phase difference.

作者: antonyluk 時間: 2016-3-17 10:36 PM 標題: 回覆 13# emmanuelpun 的帖子

To be more efficient, you should re-do all the ce/al questions you previously did wrong and make sure you understand all the concepts.

作者: hiffy 時間: 2016-3-20 09:44 AM

其實答題時我可唔可以用short form eg. req'd /KE
另別我見到 MARKING SCHEME 佢啲ANS 都係用 F=xxx , H=xxx
而冇係一開let xxxx be F.
咁若然我都係咁做會否被扣分?
THANKS

作者: siucut 時間: 2017-2-1 06:01 PM

可否一放2016 phy 中文版Past paper
感謝你

歡迎光臨小卒資訊論壇 (http://lsforum.net/board/)