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Author Topic: Physics Discussion HERE ONLY!  (Read 32840 times)

Offline cookies

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Re: Physics Discussion HERE ONLY!
« Reply #75 on: June 05, 2009, 01:06:02 pm »
guyz wat ws ur anser for the pressur of da pen on da finger and da density of water.
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Offline cherrip

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Re: Physics Discussion HERE ONLY!
« Reply #76 on: June 05, 2009, 01:17:57 pm »
hey i wrote pressure on finger = force\ area which wre 48 over 0.003 or smth like tht and as for liquid it was Dgh which is 1000 X 10 X 3 i thnk...
Can anyone tell me about the turbine question...was the fraction 1\8??? :-\ did we need to use 25m i th ques?? :-\
And one thing...the brdge rectifying ques..was it C??
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #77 on: June 05, 2009, 01:21:04 pm »
u tell

cuz i forgot
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Re: Physics Discussion HERE ONLY!
« Reply #78 on: June 05, 2009, 01:32:00 pm »
Quote from: MR.BooMBastiC on June 05, 2009, 12:55:04 pm
CRITICAL ANGLE.......CAN NEVER BE 90
lol..nice to know someone wrote the same answers as me...42 and 58.7..:D
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Offline robot_avenger

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Re: Physics Discussion HERE ONLY!
« Reply #79 on: June 05, 2009, 01:32:50 pm »
Quote from: cherrip on June 05, 2009, 01:17:57 pm
hey i wrote pressure on finger = force\ area which wre 48 over 0.003 or smth like tht and as for liquid it was Dgh which is 1000 X 10 X 3 i thnk...
Can anyone tell me about the turbine question...was the fraction 1\8??? :-\ did we need to use 25m i th ques?? :-\
And one thing...the brdge rectifying ques..was it C??
The Fraction was 1/8....but the rectifying one was A
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Re: Physics Discussion HERE ONLY!
« Reply #80 on: June 05, 2009, 01:34:40 pm »
Quote from: robot_avenger on June 05, 2009, 01:32:50 pm
Quote from: cherrip on June 05, 2009, 01:17:57 pm
hey i wrote pressure on finger = force\ area which wre 48 over 0.003 or smth like tht and as for liquid it was Dgh which is 1000 X 10 X 3 i thnk...
Can anyone tell me about the turbine question...was the fraction 1\8??? :-\ did we need to use 25m i th ques?? :-\
And one thing...the brdge rectifying ques..was it C??
The Fraction was 1/8....but the rectifying one was A
i got the same, 1/8 and A...:D
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Offline MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #81 on: June 05, 2009, 01:52:22 pm »
I THINK IT WAS C

A" IS IMPOSSIBLE
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Offline IG_ICE09

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Re: Physics Discussion HERE ONLY!
« Reply #82 on: June 05, 2009, 01:54:57 pm »
Even i thot it was C first but i changed my answer to A cuz even tho it DOES go from the left resistor to right, i think red to black right....it also lets current go from black to red! A was the only one that made sense!

anyway huever chose the wrong diagram but got the arrows for conventional current right still gets 2 marks ECF...the 1st part was only 1 mark so it shud b fine :)
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Offline Kim

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Re: Physics Discussion HERE ONLY!
« Reply #83 on: June 05, 2009, 01:57:19 pm »
i cant believe u guyz remember the paper!i already forgot it!!!!!
but i got my fraction as !/2?oh well wats gone is gone!
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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 MR.BooMBastiC

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Re: Physics Discussion HERE ONLY!
« Reply #84 on: June 05, 2009, 01:58:48 pm »
AND THE CORRECT FRACTION IS::1/8

WAT DID U GUZS WROTE 4 THE 1 ST QUESTION
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Offline qwert101

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Re: Physics Discussion HERE ONLY!
« Reply #85 on: June 05, 2009, 01:59:26 pm »
Quote from: omar777 on June 05, 2009, 12:53:22 pm
guys just by looking at the ray you can see it is bending away the from the normal... its impossible that the answer is in the '20s' it was 58 point something :)
and i think the critical angle was a bit more than 42 because when the incident ray was 42, the refracted ray was a bit less than 90... so i wrote 43 :-\
same
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Re: Physics Discussion HERE ONLY!
« Reply #86 on: June 05, 2009, 02:00:57 pm »
Quote from: MR.BooMBastiC on June 05, 2009, 01:58:48 pm
AND THE CORRECT FRACTION IS::1/8

WAT DID U GUZS WROTE 4 THE 1 ST QUESTION
i wrote vernier calipers...although i know of a micrometer..dont really know how it works..but i do calipers..so wrote tht..i messed up in the milk and water part..thts the only q im sure busted in, rest was good enough
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Offline IGCSE nightmare

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Re: Physics Discussion HERE ONLY!
« Reply #87 on: June 05, 2009, 02:01:24 pm »
I got the fraction 1\2 too!
Because it has a slower speed which means a heavier mass, right?
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Offline Kim

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Re: Physics Discussion HERE ONLY!
« Reply #88 on: June 05, 2009, 02:04:02 pm »
i wrote half as well
but i did a huge calculation
i used the kinetic and  efficiency formula
wat was the answer to the question b4 it?half the mass?i just divided 7400 by 2
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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 sweetie

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Re: Physics Discussion HERE ONLY!
« Reply #89 on: June 05, 2009, 02:05:28 pm »
i used mgh=0.5mv2 to find da mass

and i just wanna no hw u people found ur values of mass?????????
i think 25m was given and we had 2 use it, but most ppl didnt
« Last Edit: June 05, 2009, 02:09:42 pm by notty_me »
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