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Author Topic: Physics Discussion HERE ONLY!  (Read 33223 times)

Offline deejay_cool

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Re: Physics Discussion HERE ONLY!
« Reply #195 on: June 05, 2009, 07:58:59 pm »
ohhw if i got the values for power output wrong like i got 54W instead of 54000W but i got the fraction correct... how many marks will i lose????????????
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Offline leebux101

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Re: Physics Discussion HERE ONLY!
« Reply #196 on: June 05, 2009, 08:01:59 pm »
probably two...it will probably be ecf.....and relax...u wont loose a million marks....just relax...think of something tht make u happy.....go read a book...or listen to music...go and try doing something tht u love.....
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Offline Diablo

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Re: Physics Discussion HERE ONLY!
« Reply #197 on: June 05, 2009, 08:03:22 pm »
I got 54000N too I think :S , wasn't this the 10% Question?
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Offline cherrip

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Re: Physics Discussion HERE ONLY!
« Reply #198 on: June 05, 2009, 08:08:22 pm »
Yes It was , by working efficiency ...but i got confused as there was 25m given in th ques which I ddnt need to use in any part :-\
Anywayy I hope th curve will help us all  ;)

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Offline Diablo

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Re: Physics Discussion HERE ONLY!
« Reply #199 on: June 05, 2009, 08:33:51 pm »
Oh my god! I did that question by luck since I couldn't get my brains working properly :p! I also got the mass of the other wind, but i'm not sure of the fraction! I forgot to simplify it! :X!!! I wrote it (the answer that i got in the previous question)/54000 ! :(

Oh well ;p , don't worry guys we'll all do fine :). But I just hate how I remember answers after my exam -_-...
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Offline care

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Re: Physics Discussion HERE ONLY!
« Reply #200 on: June 05, 2009, 08:51:00 pm »
Quote from: tmisterr on June 05, 2009, 04:10:18 pm
i chooose aluminium as the metal, and for the diode, the answere is A, the last question, the electric fiel i wrote it should act downwards to cancel it out. for the direction of the force i wrote diagonal to the road!! i didn't know how else to express it. did any1 get the Piston question 1? Cause on my paper there was nothing like Gm or Micrometer???

i had the piston as quest number 1  :D
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #201 on: June 05, 2009, 08:59:08 pm »
piston!!!

may be u got da 1st varient

By the way....wat was da question
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Offline care

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Re: Physics Discussion HERE ONLY!
« Reply #202 on: June 05, 2009, 09:15:33 pm »
it was sth like:

the piston goes up and down approximately 72 times per minute. how could you accurately measure the time taken for one up-and-down cycle?
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #203 on: June 05, 2009, 09:20:57 pm »
OH MAN............................

AFTER SEEING THIS IWANNA BURST OUT INTO TEARS...... :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'(

I WISHED I WOULD HAVE GOT THE 1ST VARIENT...........

OH DA TEARS IN MY EYES......R ROLLIN DOWN......

U DONT KNOW HOW LUCKY U R

Y DA HELL DIDNT I GET THIS QUESTIPON IT WAS SO EASY..............


OUR QUESTION WAS LIKE...

 A MAN IS HAVING 10 SHEETS OF PLASTIC..
HOW WILL U FIND THE THICKNESS OF ONE OF THEM...


PLZ TELL ME UR SUGGESTIONS..............CARE
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Offline care

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Re: Physics Discussion HERE ONLY!
« Reply #204 on: June 05, 2009, 09:46:09 pm »
well... you can measure the thickness of the 10 plastic sheets. and divide the value by 10... repeat the measurements?
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #205 on: June 05, 2009, 09:47:30 pm »
i wrote da same..............

but using a ruler right?????
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Offline care

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Re: Physics Discussion HERE ONLY!
« Reply #206 on: June 05, 2009, 09:50:17 pm »
i think so...

because plastic sheet is probably thicker than paper sheet, so 10 sheets of it could be measured by a ruler..
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Offline IG DUDE

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Re: Physics Discussion HERE ONLY!
« Reply #207 on: June 05, 2009, 09:57:47 pm »
Quote from: Bani on June 05, 2009, 05:07:20 pm
Quote from: notty_me on June 05, 2009, 05:04:04 pm
dus any1 remember da Al & steel que were of how many marks??????

and wich was da denser medium??????????

I put the medium A, because the ray goes AWAY FROM THE NORMAL when it passess from more dense to less dense(from medium A to air)
I hope its right :-\
:D
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #208 on: June 05, 2009, 10:27:27 pm »
the medium was air.....i think
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Offline Bani

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Re: Physics Discussion HERE ONLY!
« Reply #209 on: June 05, 2009, 10:31:38 pm »
Quote from: cherrip on June 05, 2009, 08:08:22 pm
Yes It was , by working efficiency ...but i got confused as there was 25m given in th ques which I ddnt need to use in any part :-\
Anywayy I hope th curve will help us all  ;)


Efficiency  ??? I hope u did a diff variant paper, bec as far as I remember I used E=PT to solve the equation; E was 10% of the previous answer, and T was 1 second, so just substitute in the formula to find the power output....am I right?
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