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Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 203080 times)

Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #315 on: May 09, 2010, 06:26:42 pm »
Quote from: 123456789 on May 09, 2010, 06:18:48 pm
i knw this has been answered and i still dunt get it plz can any 1 explain ???????
http://www.freeexampapers.us/IGCSE/Physics/CIE/2005%20Nov/0625_w05_qp_6.pdf
q 2 a

Baladya y dont u answer this one .. :P

« Last Edit: May 09, 2010, 06:33:11 pm by ~VIN1094~ »
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Offline Naruto123

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #316 on: May 09, 2010, 06:36:40 pm »
Quote from: ~VIN1094~ on May 09, 2010, 06:26:42 pm
Baladya y dont u answer this one .. :P


lol it duznt matter who answers plz explain ?
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #317 on: May 09, 2010, 06:39:30 pm »
Waited long enough .. :P look at the fig. n temme wat u dont understand .. i hav made some modifications
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Offline Naruto123

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #318 on: May 09, 2010, 06:43:58 pm »
ya bt is this da answer so simple  :o ???
markin scheme says this
2 (a) correct symbols for resistor, voltmeter and ammeter 1
correct connections between resistors AB and BC in series with
CD in parallel with both 1
voltmeter and ammeter correctly positioned
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Offline Naruto123

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #319 on: May 09, 2010, 06:44:30 pm »
i saw a previous answer with cd parallel to Ab and bc  ??? ???
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Offline the_grim_reaper

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #320 on: May 09, 2010, 06:48:33 pm »
Really sorry guys but I still don't get the pin and cylinder thing. You keep the cylinder on the ruler and insert the pin in the gap between them or what????? Please elaborate!!!

Plus why is it necessary to use a DC voltage between the cathode and anode to create cathode rays in a vaccum?????
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #321 on: May 09, 2010, 07:31:25 pm »
Quote from: 123456789 on May 09, 2010, 06:43:58 pm
ya bt is this da answer so simple  :o ???
markin scheme says this
2 (a) correct symbols for resistor, voltmeter and ammeter 1
correct connections between resistors AB and BC in series with
CD in parallel with both 1
voltmeter and ammeter correctly positioned

i see wat u say .. Thanks for correctin .. sorry .. how about this ?? :) :)
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #322 on: May 09, 2010, 07:38:32 pm »
Quote from: deadman786 on May 09, 2010, 06:48:33 pm
Really sorry guys but I still don't get the pin and cylinder thing. You keep the cylinder on the ruler and insert the pin in the gap between them or what????? Please elaborate!!!

Plus why is it necessary to use a DC voltage between the cathode and anode to create cathode rays in a vaccum?????

You place (stick) the pin horizontally, coinciding the mark on the ruler .. u place the cylinder over the pin .. u want me to show u a drawing ??

If u use a.c u wont get a steady ray .. ur cathode and anode would constantly be changing ..
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Offline Baladya

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #323 on: May 09, 2010, 08:07:11 pm »
VIN m jokin man :P It doesn't matter who answers as long its answered :D
I need to study A LOT so m not always on so i can only answer the questions that i see unanswered yet :P
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #324 on: May 09, 2010, 08:13:03 pm »

You wont get a chance until im here .. :P lol ..:D

By the way how is prep for the exams .. im kinda getting tensed now ..   :(
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Offline Malak

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #325 on: May 09, 2010, 08:52:11 pm »
Can anyone explain The sliding contact thing...Like placing it in which position increases/decreases resistance bla bla...
Thx alot :D
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Offline SEL123

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #326 on: May 09, 2010, 08:52:38 pm »
Can someone PLEASE help me with may june 06 PAPER 6 PHYSICS igcse

QUestion 3
V- "Extend the straight line EF within the outline of the block to a point I. The distance FI must be exactly equal to b"
Whaaaaaaaaaaat?
b = FH
H --> p3 and p4 extended to the block
if you can explain the rest of the questions on this page I'd really appreciate it
How can FH and FI be equal
I don't get it
I attached it here
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Offline SEL123

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #327 on: May 09, 2010, 08:54:48 pm »
ang3l

The sliding contact for a variable resistor??
Okay..look
So if the current is coming from the left (conventional current)
If you slide the contact to the left, the resistance decreases---> current increases
If you slide it to the right, the resistance increases
Just imagine it as the resistor getting bigger
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Offline Vin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #328 on: May 09, 2010, 08:55:24 pm »
Gimme 2mins .. :)
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Offline Saladin

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Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #329 on: May 09, 2010, 09:01:12 pm »
Quote from: SEL123 on May 09, 2010, 08:52:38 pm
Can someone PLEASE help me with may june 06 PAPER 6 PHYSICS igcse

QUestion 3
V- "Extend the straight line EF within the outline of the block to a point I. The distance FI must be exactly equal to b"
Whaaaaaaaaaaat?
b = FH
H --> p3 and p4 extended to the block
if you can explain the rest of the questions on this page I'd really appreciate it
How can FH and FI be equal
I don't get it
I attached it here


hi5, u use gmail!
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