Qualification > Reference Material
Physics Paper 1 MJ2009 + Mark Scheme
AS girl:
thanks!! very helpful ;)
killzone:
--- 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)
--- End quote ---
Could u explain further please ! ok !!
astarmathsandphysics:
The down force at the base of the column of mercury must be equalt o the force op
pghmercuryA=patmosphereA
The A's cancel.
SGVaibhav:
--- 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
--- End quote ---
its D
--- End quote ---
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 ...
--- End quote ---
i wanted to verify the same thing with u while chatting, but i had to go :C
SGVaibhav:
--- 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)
--- End quote ---
same for this :P
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