# Yahoo奇摩 網頁搜尋

1. ### Physics, how to do(a), (b)?

...it stops after another 10 sec. In the next 5 sec, it travels backwards *, accelerating at 20/5 = 4 ms⁻², to 20 ms⁻¹ It...

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

It is because the electron is in a fixed orbit. A progressive wave would imply that the electron is moving away from the atom and is not in a stationary orbit. In fact, to model the hydrogen atom needs the solving of the Schrodinger...

分類：科學及數學 > 物理學 2017年02月07日

3. ### Pascal Question?

program main; var a:integer; b,c,d,e:real; begin readln(a); b:=trunc(a/1000); c:=trunc((frac(a/10))*10); d:=trunc((frac(a/100))*10); e:=trunc((frac(a/1000))*10); If (b=e) and (d=c) then write('Palindrome') else write('Not a palindrome'); end.

4. ### Physics 溫習題目 3

... force acting on the stone is 10N backward . b) By Newton's 3rd law, force ...truck Q by truck P is 719000N backward . d) Apply Newton's 2nd law on the motion...

5. ### Universe

... on the "Big Bang" theory deducing the time backward from the time of expansion from measuring the exsiting stars moving...

7. ### 請教姊妹幫幫

... mouth to suck to his XX keep move your mouth front and backwards from slow to fast I suggest you to make him feel happier before...

分類：香港 > 深水土步區 2015年03月19日

8. ### Chem acid and alkali

... dissociate to give CH3COO⁻ and H⁺ ions. In the backward reaction, CH3COO⁻ and H⁺ ions associate to give CH3COOH...

分類：科學及數學 > 化學 2014年08月03日

9. ### AL Failed 出路指引

You can go backward in this case - taking HKDSE. By taking HKDSE, you will be eligible for JUPAS again.

10. ### reflection of light(20point)

... away at 1 m/s, his image behind the mirror is also moving backward at 1 m/s. (b) In a time interval of 1 s, the distance between the boy and mirror...