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Author Topic: physics mcq help needed! urgent!  (Read 29744 times)

Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #270 on: May 17, 2010, 11:20:02 pm »
Quote from: superduper2009 on May 17, 2010, 11:10:58 pm
10 -Momentum = mv
also momentum = Ft

mv=Ft
F=(mv)/t
Average F = change in momentum / change in time
t2-t1 is the change in time...
change in momentum is P2-P1
therfore the answer is
p2-p1/t2-t1




the answer is B

i know it is answered but the corect answer is p1-p2/t2-t1
« Last Edit: May 17, 2010, 11:21:33 pm by ifraha18 »
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Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #271 on: May 17, 2010, 11:22:28 pm »
nd q36..jne 2007 thnku..fr de oders.:P
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Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #272 on: May 17, 2010, 11:26:15 pm »
q 36 and 40..??june 2007 plz.??
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Offline neno

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Re: physics mcq help needed! urgent!
« Reply #273 on: May 17, 2010, 11:35:03 pm »
u guys jst wanted to ask sumthing do u think v gta study the different type of crystalline structures such as FCC,BCC and HCP.....cuz our teacher gave us additional notes n she said read it so did ur teachers mention sumthing abt this topic tht u have to learn??
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Offline astarmathsandphysics

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Re: physics mcq help needed! urgent!
« Reply #274 on: May 17, 2010, 11:35:30 pm »
36 terminal PD=3*4/(2+4)=2V
40 D cos it mhas the highest mass
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Offline superduper2009

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Re: physics mcq help needed! urgent!
« Reply #275 on: May 17, 2010, 11:37:14 pm »
Quote from: ifraha18 on May 17, 2010, 11:20:02 pm
i know it is answered but the corect answer is p1-p2/t2-t1
sorry my bad... it is p1 - p2...:D
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Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #276 on: May 17, 2010, 11:44:23 pm »
how do v clculte the power for 36???????june 2007

n 40 is c!!!!dts y i ws confused.
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Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #277 on: May 17, 2010, 11:45:15 pm »
Quote from: superduper2009 on May 17, 2010, 11:37:14 pm
sorry my bad... it is p1 - p2...:D


how do u get p1-p2.???
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Offline superduper2009

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Re: physics mcq help needed! urgent!
« Reply #278 on: May 17, 2010, 11:54:43 pm »
it is the only one which shows the "change" in momentum
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Offline neno

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Re: physics mcq help needed! urgent!
« Reply #279 on: May 18, 2010, 12:05:30 am »
guys plz can u tell me yes or no????for wat i rote b4
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Offline superduper2009

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Re: physics mcq help needed! urgent!
« Reply #280 on: May 18, 2010, 12:08:27 am »
what do the abreviations mean?
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Offline neno

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Re: physics mcq help needed! urgent!
« Reply #281 on: May 18, 2010, 12:10:42 am »
face centred cubic(FCC),body centred cubic(BCC),hexagonal close packed(HCP) and tetrahedral structure
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Offline superduper2009

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Re: physics mcq help needed! urgent!
« Reply #282 on: May 18, 2010, 12:11:50 am »
no.. :D
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Offline neno

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Re: physics mcq help needed! urgent!
« Reply #283 on: May 18, 2010, 12:13:19 am »
k Thanks
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Offline ifraha18

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Re: physics mcq help needed! urgent!
« Reply #284 on: May 18, 2010, 12:26:36 am »
36..?????jne 2007..how do u clculte power?
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