Physics P1 and P2: Discussi0n

[Hashim]

what momen said is not true

tell me that if the P.E is being converted to K.E at a constant rate, even then the K.E is not increasing but remaining the same.That means that the K.E is also being converted to Heat. They asked for PRINCIPLE CHANGE which would then be P.E to Heat

P.E to Heat is 100 %
wrong .!


i have confirmed it from akhter mehmood my acdmy sir.!!

then it must be right coz that man cant be wrong.....hes the best physics teacher ever

 

[Hashim]

i spent bout 5 mins on this question bro.....
was gonna do P first, but den read the question carefully nd chose OP

yes the range was askhed 100 %

the range was not asked but the LIMIT was asked...i also read it several times

 

[momen]

i spent bout 5 mins on this question bro.....
was gonna do P first, but den read the question carefully nd chose OP

yes the range was askhed 100 %

the range was not asked but the LIMIT was asked...i also read it several times

RANGe 100%

 

[Hashim]

ook whatever was written its not sure but what has happened has happened and now only the
result matters coz u cant change anything now

 

[jafar]

k... ppl stop arguing cux u cant chang nething..... study MATHS

 

[M.Usman Khan]

well guys it was ...the limit of proportionality...so it is P...

and due to constant speed potential energy will change into kinetic energy in the mcq

 

[Jezla]

@ M.Usman Khan: Both are right.
Let us all concentrate on our next important subjects- Bio, Math and AddMath!!!

 

[momen]

ohhh man lost my distinction due to limit and range Question .!! =(

 

[M.Usman Khan]

hey dont be tense Jafar....Maths and ADDmaths r easy.....

bio might require some knowledge but the other two r concept based .....so they r a piece of cake....

dont get tense...tension makes u lose marks!!!!!!!

 

[Hashim]

i thnk that the bio paper would be v.tough

 

[Balaj Hassan]

i thnk that the bio paper would be v.tough

I wish it to be tough this way the percentile will drop.

 

[Zishi]

yea sorry wrote 9 cm by mistake,

nd in the propotionality question, the range was asked, not the limit,

Yep, the range was asked in its answer was OP. This was a repeated question, though.

 

[hassam]

the limit was asked check o/n 06 qp1 and the ans is p.now i hav providewd the evidence

 

[aliakramhayat7]

The principal energy conversion in MCQ number 13 was from Gravitational Potential to Heat. Kinetic was a popular choice, but since the parachutist was travelling with constant speed, the Kinetic Energy that his body possessed was also at a constant value. The increasing air resistance was due to the potential energy being converted to heat energy of the air.

Cheers.

 

[farrukh]

Regarding the energy conversion question if anyone has doubts please check June09 physics p2 Q1/part c ...you can check the mark scheme...the answer is potential to heat energy...

 

[book worm]

yes... the potential energy is consumed against work against friction(air resistance) this increases the temperature of air

 

[Mobeen]

i also agree tht bio's ppr is gona be tough ! P6 was also a bit tough and out of the patern .. i mean there was no magnification ! its worth of 15 free marks ..!
nd in extension graph.. limit was askked.. answer was P. . . it was a repeat question .. word to word same .. !

 

[book worm]

thank you farrukh.. this was what i was searching for that you found.

The change is from P.E to Heat/Internal Energy/Thermal Energy/K.E of AIR acording to the marking scheme

 

[Mobeen]

thnk God its proven .otherwise everyone was gona fight over it until the next ppr ...

 

[xcalibur]

Yeah thank God it's been finally confirmed, stop fighting over it now.. Its P.E > Heat..!!! Can't argue with the marking scheme .