Qualification > Sciences
Physics ppr 1 Discussion Here only!
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--- Quote from: ManaH on June 11, 2009, 11:07:16 am ---
--- Quote from: i-insane on June 11, 2009, 11:06:07 am ---
--- Quote from: ManaH on June 11, 2009, 11:04:53 am ---but i screwed up 2 question which i was so pissed off
i knew the ans..but i over rules my insticnt!!!
the longitudnal one...
i said 14n2
but i KNEW the ans was 2n4
bte the pressure for pistion
both ould dec right
Pressure 100% dec what about density
--- End quote ---
Few of my friends also thought 1, i was sure that it was 2 and 4 though.
Yup, pressure and density both decrease. It is mainly due to the increase in volume.
--- End quote ---
it is 2 n 4
cuz waves in water r transversal :(
n thee shallow to deep was D right?
--- End quote ---
The shallow one, I got C. Because when it goes into the shallow area, it moves slower, thus wavelength decreases, and since it has entered the area at an angle, it will refract (towards the normal in this case). D, although showed a decrease in wavelength, but the there was no refraction..so i think C is wrong..Sorry about that :(
Well, good luck for chemistry, if you take chemistry :)
MaNa:
yaa i do take chesm:)
good luck to u too
anyways i hope i got it correct:)
MR.BooMBastiC:
yeah it was c
the rays in d were not bending even tho their wavelength changed!!
MaNa:
--- Quote from: MR.BooMBastiC on June 11, 2009, 11:13:46 am ---yeah it was c
the rays in d were not bending even tho their wavelength changed!!
--- End quote ---
Oo baga!!! i got some qs wrong
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--- Quote from: ManaH on June 11, 2009, 11:12:15 am ---yaa i do take chesm:)
good luck to u too
anyways i hope i got it correct:)
--- End quote ---
Good luck to you too :)
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