gobcpsr

2002Q12

1,2,3 STATEMENT都唔識..==
1994Q13

我想問MICROSCOPE係咩野鏡?
1999Q11

唔明點解3錯...
個IMAGE唔係應該INVERTED咩?
1996Q36

唔明STATEMENT1點解錯...
2002Q31

唔明STATEMENT3講乜...

感激萬分...

TwHiN

2002Q12
STATE1:用conservation of momentum計　
assume right direction be positive
0=50x-0.8+42xV
V=0.95
STATE2:no external force act on the system,so this is true
STATE3:when kitty catches the ball,she gain K.E.,so the statement is false

1994Q13好似out syllabus
MICROSCOPE係顯微鏡

1999Q11
STATE3:係橫向倒置

1996Q36
STATE1:應該connect PR.咁先可以令個bulb有10V ratio of turns:3600/180=20 200/20=10V

2002Q31
STATE3:as the ruler carries charges,that will induce charges on the running water,if the ruler carries positive charges,the negative charges on the running water will induce near the ruler ,and the induced positive charges will be repel on opposite side.so the statement is true

[ 本帖最後由 TwHiN 於 2010-4-18 11:35 PM 編輯 ]

iVanxX

引用:

原帖由 gobcpsr 於 2010-4-18 10:57 PM 發表
2002Q12
26699
1,2,3 STATEMENT都唔識..==
1994Q13
26700
我想問MICROSCOPE係咩野鏡?
1999Q11
26701
唔明點解3錯...
個IMAGE唔係應該INVERTED咩?
1996Q36
26702
唔明STATEMENT1點解錯...
2002Q31
...

2002Q31

第3個情況姐系話   同時有 正感生電荷 同 負感生電荷

singga

一個image inverted應該係
原本:


inverted (ie上下掉轉) (順時針將佢拎轉)


而唔係反起佢


[你可以參考 05 Q4]


[ 本帖最後由 singga 於 2010-4-19 04:43 AM 編輯 ]

ngkin

02Q12:
statement 2 : total momentum of the system is coserved. But the momemtum of the ball is not conserved.
statement 3 : It is correrct. Because of it is talking about total K.E.