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Author Topic: Physics Paper 1 MJ2009 + Mark Scheme  (Read 6406 times)

Offline killzone

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #15 on: June 21, 2009, 12:31:56 pm »
Quote from: SnEaKrzzz NyTe...... on June 21, 2009, 12:15:53 pm
Quote from: ADIN on June 21, 2009, 09:01:08 am
Your 13th answer is wrong.. the answer is C not D

its D

no no ,, i think the answer is C ,,, cuz after evaporation the most energetic particles have escaped taking the energy wid them . which in turn decreases the temperature of the remaining liquid .. its just like an after shave which after it evaporates leaves the skin cool ...
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Offline Silent Screamer

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #16 on: June 21, 2009, 12:34:01 pm »
WHAT ABT THE 11th question?????
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Offline killzone

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #17 on: June 21, 2009, 12:53:17 pm »
Quote from: Silent Screamer on June 21, 2009, 12:34:01 pm
WHAT ABT THE 11th question?????

well i personally put down C ,, ppl people say its B cuz some crossectional area bullshit ,,i just dont get how its B , i think its C
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Offline astarmathsandphysics

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #18 on: June 21, 2009, 12:59:09 pm »
It is B. The cross sectional area is different but the pressure is the same using P=pgh(=atmospheric pressure)
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zara

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #19 on: June 21, 2009, 01:38:04 pm »
im so damn gone........ :'(
losin 7 marks.......hope the thresholds low...
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Offline AS girl

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #20 on: June 21, 2009, 03:02:23 pm »
thanks!! very helpful ;)
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If i fall along the way pick me up and dust me off...and if i get too tired to make it..be my breath so i can walk!!

Offline killzone

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #21 on: June 21, 2009, 03:07:20 pm »
Quote from: astarmathsandphysics on June 21, 2009, 12:59:09 pm
It is B. The cross sectional area is different but the pressure is the same using P=pgh(=atmospheric pressure)

Could u explain further please !  ok !!
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Offline astarmathsandphysics

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #22 on: June 21, 2009, 03:39:27 pm »
The down force at the base of the column of mercury must be equalt o the force op

pghmercuryA=patmosphereA

The A's cancel.
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Offline SGVaibhav

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #23 on: June 21, 2009, 04:05:30 pm »
Quote from: bebo54 on June 21, 2009, 12:31:56 pm
Quote from: SnEaKrzzz NyTe...... on June 21, 2009, 12:15:53 pm
Quote from: ADIN on June 21, 2009, 09:01:08 am
Your 13th answer is wrong.. the answer is C not D

its D

no no ,, i think the answer is C ,,, cuz after evaporation the most energetic particles have escaped taking the energy wid them . which in turn decreases the temperature of the remaining liquid .. its just like an after shave which after it evaporates leaves the skin cool ...

i wanted to verify the same thing with u while chatting, but i had to go :C
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Offline SGVaibhav

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #24 on: June 21, 2009, 04:05:55 pm »
Quote from: astarmathsandphysics on June 21, 2009, 12:59:09 pm
It is B. The cross sectional area is different but the pressure is the same using P=pgh(=atmospheric pressure)

same for this :P
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Offline IG_ICE09

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #25 on: June 22, 2009, 09:25:37 am »
hey u guyz my physics teacher ses the 11th answer is B , it remains the same, but ur ms shows C. but if u think about it -if u keep increasing the diameter of the tube will the mercury be at the same level for same pressure? that seems kinda wierd..

nyway if the answer is C im gettin 40/40!! but B may be right
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Offline astarmathsandphysics

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #26 on: June 22, 2009, 09:27:22 am »
B is right.
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Offline IG_ICE09

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #27 on: June 22, 2009, 09:37:18 am »
isnt 32 wrong? both the fuse and circuit breaker shud b placed at X right? so the answer is not B
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Offline astarmathsandphysics

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #28 on: June 22, 2009, 10:23:38 am »
Both fuse and breaker should be places at X.The answer is A.
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Offline m3ani

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Re: Physics Paper 1 MJ2009 + Mark Scheme
« Reply #29 on: June 22, 2009, 11:51:39 am »
isn't 18 B? because they are smoke particles and not air particles so they diffuse
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