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Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 229482 times)

holtadit

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1320 on: May 25, 2010, 04:52:56 pm »
Quote from: red_911 on May 25, 2010, 04:51:00 pm
i want help in question 16 0625/11/M/J/09  :-X

HiGH THERMAL CAPACITY = SMALL TEMP RISE

LOW THERMAL CAPACITY = LARGE TEMP RISE

Now figure it out  ;)
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1321 on: May 25, 2010, 04:53:35 pm »
Quote from: 8T on May 25, 2010, 04:52:17 pm
No one has explained to me why may june 05 q 32 is B  ?
Link:http://www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf

https://studentforums.biz/index.php/topic,6468.msg224515.html#msg224515
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1322 on: May 25, 2010, 04:54:29 pm »
Quote from: rhea on May 25, 2010, 04:30:30 pm
Some changes are made, one at a time.
• The d.c. supply is reversed.
• The coil is turned before switching on, so that P starts on the right and Q on the left.
• The poles of the magnet are reversed.
• The turns on the coil are increased in number.
How many of these changes make the coil rotate in the opposite direction?
A 1
B 2
C 3
D 4

I think its B
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Offline Snake

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1323 on: May 25, 2010, 04:55:46 pm »
Ok guys I'm off to study for my History exam, have fun :)
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Offline red_911

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1324 on: May 25, 2010, 04:56:52 pm »
Quote from: Ari Ben Canaan on May 25, 2010, 04:52:56 pm
HiGH THERMAL CAPACITY = SMALL TEMP RISE

LOW THERMAL CAPACITY = LARGE TEMP RISE

Now figure it out  ;)
OHHH...got it ,.. thanks alot  ;D ;D
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1325 on: May 25, 2010, 04:57:49 pm »
Quote from: 8T on May 25, 2010, 04:52:17 pm
No one has explained to me why may june 05 q 32 is B  ?
Link:http://www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf

Ok listen .. it is B because its a potentiometer .. if u see the 'arrow' is the contact which can be moved to change the resistance of the circuit hence changing the circuit ..
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Offline Baladya

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1326 on: May 25, 2010, 04:58:10 pm »
I got bored of studying :S  :o :o Cmon man study study only 2 days left before some free time :D
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1327 on: May 25, 2010, 04:59:22 pm »
Quote from: Baladya on May 25, 2010, 04:58:10 pm
I got bored of studying :S  :o :o Cmon man study study only 2 days left before some free time :D

Hehe lol...For me 2 days left before m free completely..just hav to finish phy  ::)
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Offline 8T

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1328 on: May 25, 2010, 05:00:23 pm »
Thanks for pointing it out :)
Help with M 05 q 36? www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf
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Offline Baladya

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1329 on: May 25, 2010, 05:00:50 pm »
OMG U DONT HAVE Bio and Chem  :o :o :o :o :o :o LUCKY **** xD  ;D ;D


Anyway can u guys explain what is ionising  (smth) and what is it used in?
And also plz explain how radioactivity is used in fire alarms
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Offline dodi23

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1330 on: May 25, 2010, 05:01:49 pm »
lool baladaya...u actually put tht as us sig??
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Offline Ghost Of Highbury

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1331 on: May 25, 2010, 05:02:39 pm »
Quote from: 8T on May 25, 2010, 05:00:23 pm
Thanks for pointing it out :)
Help with M 05 q 36? www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Jun/0625_s05_qp_1.pdf

A - decreases. MAgnets, north and south attract.
« Last Edit: May 25, 2010, 05:15:59 pm by A@di »
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Offline Raywin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1332 on: May 25, 2010, 05:03:29 pm »
Quote from: A@di on May 25, 2010, 05:02:39 pm
A - decreases. MAgnets, north and south attract.

But how do u noe which is north and which is south? :s
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Offline Baladya

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1333 on: May 25, 2010, 05:03:59 pm »
Quote from: dodi23 on May 25, 2010, 05:01:49 pm
lool baladaya...u actually put tht as us sig??

See i dared u xD ;D
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Offline Baladya

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #1334 on: May 25, 2010, 05:04:58 pm »
Quote from: Raywin on May 25, 2010, 05:03:29 pm
But how do u noe which is north and which is south? :s

Current is going from + to -. And so current is gonna go in one side (and this is S) and the come out from (N)
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