IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: gaurav95 on May 26, 2010, 02:45:55 pm

Title: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: gaurav95 on May 26, 2010, 02:45:55 pm
Can u please answer the 1st q i m getting 8(.5*8*2)In p 3

ms says 22 how pls tell thx

sorry insufficient info 1st q 3rd subpart.............
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: username on May 26, 2010, 02:49:31 pm
2.25
rite?
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: Vin on May 26, 2010, 02:52:35 pm

m * d = m * d

18 * 2.5 = d * 20

d = 2.25

Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: username on May 26, 2010, 02:53:52 pm
m * d = m * d

18 * 2.5 = d * 20

d = 2.25


xactly wat i did
but he rote
22????
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: Vin on May 26, 2010, 02:57:00 pm

Might have made a mistake in reading the ms ;)
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: holtadit on May 26, 2010, 02:57:55 pm
NO He's correct.


See the follwoing. Use the formula for an area of a trapezium for this.

0.5*(15+7)*2=  22 metres
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: username on May 26, 2010, 02:58:49 pm
trapezium???
dude which question?///????
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: holtadit on May 26, 2010, 02:59:08 pm
Might have made a mistake in reading the ms ;)

Hes talking about QUESTION 1
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: gaurav95 on May 26, 2010, 03:01:03 pm
Hes talking about QUESTION 1

yep  ari is correct i modified it later..............
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: gaurav95 on May 26, 2010, 03:10:53 pm
Thanks ari i have understood my mistake.........
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: holtadit on May 26, 2010, 03:13:33 pm
Thanks ari i have understood my mistake.........

no prob ;)
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: gaurav95 on May 26, 2010, 03:15:14 pm
Thanks ari i have understood my mistake.........

sorry guys but one more q

same paper
q 6 b
its wavelength=vel/freq

so its  3/5 *10^8/10^14 right

i m getting  6*10^-7 ms says 6*10m

thx in advance
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: holtadit on May 26, 2010, 03:18:35 pm
sorry guys but one more q

same paper
q 6 b
its wavelength=vel/freq

so its  3/5 *10^8/10^14 right

i m getting  6*10^-7 ms says 6*10m

thx in advance


In nearly all the papers they omit the ^-7 sign. Its a PRINTING ERROR.

Your answer is correct. :) ;)
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: Vin on May 26, 2010, 03:22:07 pm
yep  ari is correct i modified it later..............

haha LOL :D

ok i see .. thanks Ari for covering ;)
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: gaurav95 on May 26, 2010, 03:26:57 pm
In nearly all the papers they omit the ^-7 sign. Its a PRINTING ERROR.

Your answer is correct. :) ;)

Thanks a lot ARI
...........
Title: Re: PHy DOUBT !FAST!FAST!FAST!FAST!FAST!FAST!FAST!
Post by: The Golden Girl =D on May 26, 2010, 08:37:04 pm
Thanks a lot ARI
...........

i saw the display name and then i saw ur name i was like (CHILL mate  ::) ) ..lol

anyways i hope u kill the paper (ACE it ;) ) .....

People , KILL the paper   >:(  lol  ;)