天同

Ls

回覆: 0

2018-04-10 12:16 am

Central force question?

Ls

回覆: 4

2018-03-27 9:45 am

Question about linear fictitious force, (link in the description)?

PING FAI

回覆: 2

2018-02-18 9:26 pm

現實中有咩不是光學介質(optical medium)?

[匿名]

回覆: 1

2018-02-03 9:43 pm

FInd the the Norton equivalent?

Ls

回覆: 1

2018-02-03 4:30 am

Question about water waves?

[匿名]

回覆: 1

2018-01-21 6:00 pm

物理電路問題 求解?

Clubbing

回覆: 1

2017-12-29 11:05 am

請問，一個8L(水容量)的鋼瓶裏有30000psi空氣，連接一個沒有空氣的4.3L(水容量)鋼瓶 問: 1)連接後兩個瓶的壓力? 數式? 2)若4.3L的鋼瓶本來已有10000psi空氣，連接後的壓力?數式? 感謝解答?

[匿名]

回覆: 1

2017-12-05 3:43 pm

About heat transfer (熱傳)?

[匿名]

回覆: 1

2017-11-24 11:29 pm

求基本電學等效電阻?

欣潔

回覆: 1

2017-11-20 10:14 pm

請問運動力學的問題。 下表有沒有大大可以幫我解釋一下，這分為四個階段，其中包括初始衝擊峰值，二次沖擊峰值，重量接受度 發球drive-ofF。 drive-off 階段是甚麼意思? stance是姿態還是立場?? 第三期重量接受度，我覺得翻得很奇怪。 為什麼第三四期，這麼平穩?

KenLam

回覆: 2

2017-11-11 8:41 am

一個物理力學問題： 有一個斜面放在水平的卓上，斜面與水平成50度，有一個100N的力，垂直的壓在斜面上，這樣的話, 斜面會向水平方向移動，那麼即是有多少力從水平方向推動斜面？

[匿名]

回覆: 1

2017-10-15 7:39 pm

Physics frequency order http://upload.lsforum.net/users/public/w349222t72.png?

Cic

回覆: 1

2017-10-08 5:21 pm

請問 science 中的right hand grip rule , 如何分辨個方向係clockrise 定anticlock？thanks?

用戶46949

回覆: 1

2017-10-08 6:07 pm

請問用細火煲一煲水, 半小時後, 大概幾多ml 既水會被蒸發掉? 是不是 around 600ml?

[匿名]

回覆: 1

2017-09-18 5:08 pm

Physics初中電路 http://upload.lsforum.net/users/public/u2711^g72.png?

Ls

回覆: 1

2017-07-24 9:51 pm

To 天同知識長.....?

[匿名]

回覆: 1

2017-05-08 11:03 pm

pressure problem?

YiNiei

回覆: 1

2017-05-01 6:32 pm

我想問紙，如簿，書，要加熱到幾多度才燒著？是不是愈厚所需溫度愈高？ 如果是字典，要幾多度才燒著？謝謝！?

hui

回覆: 1

2017-04-25 8:25 am

Physical problems?

[匿名]

回覆: 1

2017-04-18 12:36 am

所算答案有偏差 求解?

[匿名]

回覆: 1

2017-04-13 7:17 pm

Find the time for a wave to travel from one end to the other end of the string.?

alfred

回覆: 1

2017-04-08 10:38 pm

Plz help me to finish this physics question?

alfred

回覆: 1

2017-04-08 10:40 pm

Plz help me to finish this physics question?

Ls

回覆: 2

2017-03-31 9:12 pm

help super urgent!!!!!!!!!!!!! physics about mirror?

Ls

回覆: 1

2017-03-30 12:19 pm

One physics MC about refraction, one MC about transformer, please help?

Ls

回覆: 2

2017-03-27 2:33 pm

Please help, why is the answer D? This is similar to the circuit question I asked before?

Ls

回覆: 1

2017-03-25 11:00 pm

one MC about circuit concept?

Ls

回覆: 1

2017-03-24 9:05 pm

Question about moment! please answer and help thanks?

Ls

回覆: 1

2017-03-24 1:32 am

Please help. One MC about wave and one about lens?

Ls

回覆: 1

2017-03-23 1:27 am

3 physics MC, Please help very urgent?

[匿名]

回覆: 1

2017-03-19 12:50 pm

The conical pendulum consists of a bob of mass m attached to the end of an inflexible light?

夜

回覆: 2

2017-03-13 11:31 pm

同上一個問題 == 現在小學老是都這樣出的唷??? 甲、乙兩車作直線運動，其速率分別為50m/s 與30m/s，若兩車以相同之減速度踩煞車而終致停止， 試求煞車距離比？ 【Ans：25：9】?

chung

回覆: 1

2017-03-07 5:47 pm

Question about nano meters physics?

chung

回覆: 1

2017-03-04 7:51 pm

Urgent physics question?

chung

回覆: 1

2017-03-03 10:43 am

Question about circuit plz?

Ls

回覆: 1

2017-03-01 10:52 pm

why is the half life 80s ? is this question wrong?

chung

回覆: 1

2017-02-27 4:22 pm

Addition information of the question of lens I asked before?

HS

回覆: 1

2017-02-19 11:48 pm

how to explain (b)?

Ls

回覆: 2

2017-02-08 12:06 am

Is this solution wrong?

Ls

回覆: 1

2017-02-06 11:43 pm

Confusions about electrons as a wave. (A bit long and stupid. Thanks you so much for taking time to see)?

Ls

回覆: 2

2017-02-03 7:44 pm

Does work function in photoelectric changes with the voltage applied.?

chung

回覆: 1

2016-12-27 12:42 am

Please check my calculation. Very confused. Gravitation.?

chung

回覆: 1

2016-12-26 5:27 pm

Gravitation (satellite)?

Ls

回覆: 1

2016-12-26 3:17 pm

Question about gravitational force.?

Ls

回覆: 1

2016-12-25 8:00 pm

Question about circular motion on a horizontal road?

Ls

回覆: 2

2016-12-24 2:33 pm

A charge will experience a force when it travels in a magnetic field. By Newton 3rd law, what are the action and reaction pair?

Ls

回覆: 2

2016-12-20 10:22 pm

Please prove that the lost of KE is the largest when it undergoes perfectly inelastic collision (stick together after collision)?

chung

回覆: 1

2016-12-17 3:09 pm

Force and motion problem?

Ls

回覆: 3

2016-12-16 12:01 am

my book said the force "push of table" acting on a book at rest on the table is a type of electro-magnetic force. Please explain.?

wan

回覆: 1

2016-12-10 10:27 pm

負正原子分別是什麼?