天同

Kin ying

回覆: 1

2016-12-08 9:11 pm

想問下Physics 09年CE Question 28 條點計，係睇gragh 既，upload 唔到圖，希望有人教?

Kin ying

回覆: 1

2016-12-07 9:07 am

physics ，please help～?

Ls

回覆: 1

2016-12-06 8:34 am

Please verify the answer.(Magnetism)?

Ls

回覆: 1

2016-12-04 11:51 am

Re: EPE of a neutral object?

Ls

回覆: 1

2016-12-03 5:30 am

EPE of a neutral object?

Ls

回覆: 2

2016-12-04 7:19 am

Please help. Big confusion about potential. Urgent.?

Ls

回覆: 1

2016-12-03 4:47 am

Question about shuttle ball experiment. Very confused.?

Kin ying

回覆: 2

2016-12-02 3:10 pm

Physics questions （Kinematics）有answers 但need steps?

Mai Wai

回覆: 1

2016-12-01 1:26 pm

30kg的重物以20m/s的初速(沒有外力協助)爬上角度為20的理想平滑山坡.1)以其失去動能=其獲得的位能後計算其爬上山坡的長度.2)以v^2-u^2=2as直接計算長度. (1)和(2)的結果哪個準確?

Ls

回覆: 1

2016-12-01 3:09 am

Question about electrostatics.?

terry

回覆: 1

2016-11-30 1:07 pm

呢條問題點做，求解答?

Ls

回覆: 1

2016-12-01 3:21 am

Question about gold leaf electroscope.?

terry

回覆: 1

2016-11-30 1:06 pm

呢條問題點做，求解答?

Kin ying

回覆: 1

2016-11-27 5:36 am

Physics question（Ans：1.37）求steps?

Ls

回覆: 1

2016-11-27 8:48 am

I don't understand the answer of a) ,please explain what does p.d. drop increases mean.?

Kin ying

回覆: 2

2016-11-26 10:20 am

Physics question?

[匿名]

回覆: 1

2016-11-25 10:52 am

磁鐵不用時應如何放置 請畫出來?

S.S.

回覆: 2

2016-11-24 4:09 pm

what is interaction time? how to calculate?

Ls

回覆: 1

2016-11-22 2:21 pm

Please tell me if my approach to the answer is correct or not. The correct ans is E.?

Ls

回覆: 1

2016-11-22 3:46 pm

Question about current?

Ls

回覆: 1

2016-11-21 1:20 pm

Please explain about (3)?

[匿名]

回覆: 1

2016-11-20 10:24 am

Solve physics questions?

[匿名]

回覆: 1

2016-11-14 11:20 am

Can you answer the following questions?

Ls

回覆: 1

2016-11-13 1:15 pm

How can electrons be absorbed by material of the object in TEM microscope?

Ls

回覆: 1

2016-11-10 1:45 pm

(transformer) why does iron loss in core doesn't affect voltage but copper loss in winding affect voltage?

Ls

回覆: 1

2016-11-10 1:49 pm

Is this question wrong or impossible to answer? Why is the answer D?

Ls

回覆: 1

2016-11-05 6:19 pm

Re: photoelectrons having different speed.?

Ls

回覆: 1

2016-11-05 1:04 pm

Question about x-ray, concept confusion?

Ls

回覆: 1

2016-11-05 11:20 am

Explain why photoelectrons have different speed while their incident photons have fixed energy.?

Ls

回覆: 2

2016-11-04 5:11 pm

Why (3) is not correct?isn't infrared produced? Isn't black body radiation produced?

Ls

回覆: 1

2016-11-04 12:18 pm

Re: the question of brightness?

Ls

回覆: 1

2016-11-03 2:13 pm

why cant electrons be excited by fast moving protons?

Ls

回覆: 1

2016-11-03 2:56 pm

Is brightness just related to the number of photons per time and independent of the photons' frequency?

[匿名]

回覆: 1

2016-10-31 2:45 pm

Physics Heat 2 Help?

[匿名]

回覆: 1

2016-10-31 2:21 pm

Physics Heat Help?

[匿名]

回覆: 1

2016-10-31 12:09 pm

Help Physical sound question!?

Dan

回覆: 1

2016-10-29 3:46 am

why is angular velocity perpendicular to the plane of rotation ?

[匿名]

回覆: 1

2016-10-23 1:42 pm

Phy Archimedes' Principle 問題求解?

Ls

回覆: 1

2016-10-23 11:55 am

Why does the sun have higher pressure in the core? Isn't the gravity increases linearly with the radius and highest pressure on the surface?

Ls

回覆: 1

2016-10-23 12:04 pm

How can nuclear fusion be uncontrolled? as there are no trigger like new nitrogens in fission?

[匿名]

回覆: 1

2016-10-20 1:08 pm

為什麼垂直分量的初速是0？

[匿名]

回覆: 2

2016-10-19 4:43 am

Physics Rotation2?

Mai Wai

回覆: 1

2016-10-17 4:29 pm

假設有不同形狀的星體(球體/正立方體/柱體/錐體),在這些星體的不同緯度行走時地心吸力會不會有變化(假設同一地心加速度)?

[匿名]

回覆: 1

2016-10-17 11:50 am

Physics Rotation?

Ls

回覆: 1

2016-10-17 2:09 pm

Why KEmax=hf-work function?

[匿名]

回覆: 1

2016-10-17 3:49 am

Physics Rotation?

Ls

回覆: 1

2016-10-14 1:12 pm

Physics. Why the water flow along the pipe will contribute pressure on the wall of the pipe which is parallel to the direction of flow?

Ls

回覆: 1

2016-10-14 1:06 pm

Will the speed of an electron convert to mass when it is near light speed?

Ls

回覆: 1

2016-10-11 5:09 pm

why cant heating speed up radioactivity rate?

Ls

回覆: 1

2016-10-11 3:04 pm

Question about photoelectric effect?