Author Topic: Maths & Physics Help  (Read 59924 times)

Offline hyebyekadal

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Re: Maths & Physics Help
« Reply #345 on: May 11, 2009, 10:47:23 am »
(c) Following this experiment, the student wishes to investigate whether two lamps in parallel
with each other have a smaller combined resistance than the two lamps in series. Draw
one circuit diagram showing
(i) two lamps in parallel with each other connected to a power source,
(ii) an ammeter to measure the total current in the circuit,
(iii) a voltmeter to measure the potential difference across the two lamps.

 
Help? Can anyone be kind enough to draw and show how the circuit diagrams for these kind of questions should look?
Also I particularly need help with the part (iii) as how can you connect a voltmeter to measure the voltage across BOTH the lamps?
Thanks in advance and I hope that someone will answer this question soon!

Offline emi

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Re: Maths & Physics Help
« Reply #346 on: May 11, 2009, 11:10:23 am »
kim ,, as far i know .. Volt meter is always connected in parallel .. Ameter & variable resistor is connected in series ... dono
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Offline emi

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Re: Maths & Physics Help
« Reply #347 on: May 16, 2009, 10:19:42 am »
please can any one solve Q1 all parts in math SP 4 ??  please

http://www.freeexampapers.us/IGCSE/Maths/CIE/Specimen/0580_y11_sp_4a.pdf
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Offline cockyxrocker

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Re: Maths & Physics Help
« Reply #348 on: May 16, 2009, 11:48:32 am »
here is the answer for question 1
feel free to ask if u have any doubts ^^

Offline emi

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Re: Maths & Physics Help
« Reply #349 on: May 16, 2009, 01:24:39 pm »
thanks cockyxrocker
u have been great help to me .. i really appreciate the time u spent to make that ... thanks alot  :-*
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Offline Zakoor

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Re: Maths & Physics Help
« Reply #350 on: May 23, 2009, 11:21:54 pm »
Heya guys,

On the IGCSE syllabus (code 0625) physics, 3.1 , it says that we have to "give the meaning of the term wavefront"

Can anyone explain and define wavefront? Cause Ive tried reading it from a book but don't seem to understand what its about exactly.

Thanks.
« Last Edit: May 23, 2009, 11:33:25 pm by Zakoor »

Offline astarmathsandphysics

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Re: Maths & Physics Help
« Reply #351 on: May 23, 2009, 11:25:29 pm »
A crest.

Offline Zakoor

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Re: Maths & Physics Help
« Reply #352 on: May 23, 2009, 11:34:08 pm »
A crest.

Don't understand what you mean exactly, Any further explanation? ???

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Re: Maths & Physics Help
« Reply #353 on: May 24, 2009, 06:15:51 am »
A wavefront is a line that represents in phase points in a wave like crests or troughs.
read this page http://jcsu.jesus.cam.ac.uk/~rpc25/notes/physics/waves/waves.html
i'm not very good at explaining

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #354 on: May 24, 2009, 08:23:17 am »
i know a kool link
will be back in 2 minutes, giving the link

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #355 on: May 24, 2009, 08:25:10 am »
http://micro.magnet.fsu.edu/electromag/java/transformer/

here this is a very kool transformer

anyone knows a website, wherer we can play with a cro. like we connect the y plates and we adjust the grid and ..

Offline Zakoor

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Re: Maths & Physics Help
« Reply #356 on: May 24, 2009, 09:53:27 am »
Thanks for your help/links guys, helped me out loads, real appreciated   :)

Offline studentforumuser

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Re: Maths & Physics Help
« Reply #357 on: June 02, 2009, 12:07:46 pm »
Hey,
So Can Someone plzz Tell me the most important things, you should know for PHYSICS,  ???
like things whuch are really important..  MESSAGE ME ..plzz  :'(
Thanks Anyway..!  :P
=D 
 
  ::)
does any1 have a summary or any notes etc.... like the one q80boy had given for chemistry..!!
just put it up here pls..!  :)
« Last Edit: June 02, 2009, 04:51:48 pm by studentforumuser »

Offline Kim

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Re: Maths & Physics Help
« Reply #358 on: June 03, 2009, 12:10:49 pm »
ok astar cud u explain transformers to me?and also cud u give me a gud definition for a transistor or the work of a transistor?
After all is said and done, more is said than done.

By the time a man realizes that maybe his father was right, he usually has a son who thinks he’s wrong.

The early bird may get the worm, but the second mouse gets the cheese.

Offline Ghost Of Highbury

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Re: Maths & Physics Help
« Reply #359 on: June 03, 2009, 12:17:06 pm »
Hey,
So Can Someone plzz Tell me the most important things, you should know for PHYSICS,  ???
like things whuch are really important..  MESSAGE ME ..plzz  :'(
Thanks Anyway..!  :P
=D 
 
  ::)
does any1 have a summary or any notes etc.... like the one q80boy had given for chemistry..!!
just put it up here pls..!  :)

this guid was given to me by nid404
thank her
good luck
divine intervention!