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Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 225697 times)

Offline $H00t!N& $t@r

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #225 on: May 08, 2010, 03:20:24 pm »
Quote from: Fastal on May 08, 2010, 02:51:28 pm
for that question
i think it looks like the picture attached
mark schem is right
(forgot to draw switch)

Guys! now m relly confused  :( im getting different answers. what is the right answer  ???
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #226 on: May 08, 2010, 03:29:37 pm »
Quote from: ang3l on May 08, 2010, 03:18:11 pm
Yeah the sub parts too....
Thx alot

ok part b)   Take reading without paper in between .. Take reading with paper in between .. subtract the two to give an estimate amount of alpha particles being released .. u might no the reason to choose paper .. its a good absorber for alpha ..

c)  1. use tongs/forceps to handle the radioactive material to keep some distance ..
     2. use protective clothing gloves/coat etc.
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #227 on: May 08, 2010, 03:31:57 pm »
Quote from: the golden girl on May 08, 2010, 01:31:18 pm
can someone plz explain to me paper 6 novemeber 2005 question 1) C)

thx in advacne :D

tried my best to keep it simplified .. u may draw details ..
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Offline The Golden Girl =D

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #228 on: May 08, 2010, 04:29:51 pm »
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Offline The Golden Girl =D

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #229 on: May 08, 2010, 04:32:23 pm »
can anyone plz explain to me November 2002 question 5)a(ii) and b) paper 6


thx in advance
« Last Edit: May 08, 2010, 04:36:00 pm by the golden girl »
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Offline Fastal

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #230 on: May 08, 2010, 04:38:21 pm »
Quote from: Shooting Star on May 08, 2010, 03:20:24 pm
Guys! now m relly confused  :( im getting different answers. what is the right answer  ???

what i drew and what ~VIN1094~ said
are correct, i think
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Offline Snake

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #231 on: May 08, 2010, 04:44:26 pm »
Quote from: the golden girl on May 08, 2010, 04:32:23 pm
can anyone plz explain to me November 2002 question 5)a(ii) and b) paper 6


thx in advance


5A)II) The Triangle Sizes were 1.5 (Height) and 2 (Base) both CM. Just draw the same picture only magnified by x2. So Height will be 3CM and Base will be 4CM.
B)Using a set square to make sure the ruler is horizontaly straight (the ruler) and measurer the Distance.
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Offline The Golden Girl =D

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #232 on: May 08, 2010, 04:50:47 pm »
Quote from: Snake on May 08, 2010, 04:44:26 pm
5A)II) The Triangle Sizes were 1.5 (Height) and 2 (Base) both CM. Just draw the same picture only magnified by x2. So Height will be 3CM and Base will be 4CM.
B)Using a set square to make sure the ruler is horizontaly straight (the ruler) and measurer the Distance.

thx  :D
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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #233 on: May 08, 2010, 05:00:08 pm »
Quote from: the golden girl on May 08, 2010, 04:32:23 pm
can anyone plz explain to me November 2002 question 5)a(ii) and b) paper 6



can someone show me a drawin of it so that i understand it perfectly?

thx in advance
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #234 on: May 08, 2010, 05:27:39 pm »
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Offline The Golden Girl =D

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #235 on: May 08, 2010, 05:34:29 pm »
Quote from: ang3l on May 08, 2010, 05:27:39 pm
05 Jun P6 Q4 Part d - can anyone explain the answer? http://www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_6.pdf

09 Jun Q5 Part a & b http://www.freeexampapers.us/IGCSE/Physics/CIE/2009%20Jun/0625_s09_qp_6.pdf
09 Nov Q5 Part a http://www.freeexampapers.us/IGCSE/Physics/CIE/2009%20Nov/0625_w09_qp_6.pdf

Thx in advance

i can help u with the first one;
umm the answer is as follows :

take the time of ex: 50 oscillations and the divide the time by 50.

hope i helped
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Offline Ghost Of Highbury

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #236 on: May 08, 2010, 05:40:29 pm »
4d) An average has be taken to get accurate result. Oscillation divided by time to get T.

5a) check the the 8th post : https://studentforums.biz/index.php/topic,4578.msg139947.html#msg139947
5b) with a pen/marker, mark the ends of the diameter of the circle on the ruler, remove the cylinder, find the center of the diameter and get the reading.

nov 09 - 5a) attached.
« Last Edit: May 08, 2010, 05:48:05 pm by A@di »
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #237 on: May 08, 2010, 05:45:02 pm »
Thx Both...

Question 4 was easy...Silly me..i didnt understood

Is this diagram correct?M confused with the Ammeter and variable resistor position

http://img171.imageshack.us/img171/3774/28119081.png

N thx
« Last Edit: May 08, 2010, 05:48:29 pm by ang3l »
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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #238 on: May 08, 2010, 05:48:35 pm »
Quote from: ang3l on May 08, 2010, 05:45:02 pm
Thx Both...

Question 4 was easy...Silly me..i didnt understood

Is this diagram correct?M confused with the Ammeter and variable resistor position



N thx

yup it is ..

 u gotta kno that the ammeter is put in series ..like how u put it .....as for the voltmeter it's out in parallel like what u did .........
got it ?
 
anytime :D

hope i helped ...
« Last Edit: May 08, 2010, 05:50:14 pm by the golden girl »
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Offline Ghost Of Highbury

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #239 on: May 08, 2010, 05:49:58 pm »
Quote from: ang3l on May 08, 2010, 05:45:02 pm
Thx Both...

Question 4 was easy...Silly me..i didnt understood

Is this diagram correct?M confused with the Ammeter and variable resistor position

http://img171.imageshack.us/img171/3774/28119081.png

N thx

Correct.

By the way, check the lens rule screen drawing in my previous post. also the link.
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