Physics: Post your doubts here!

[anastasia grey113]

yeah we use it in 2nd part but third pare just E=ML?

well the ice also had to gain temperature right?
it rose from -18 to 23 so yh
v had to use that too

 

[Tauqir_hamed]

yes thaz true
n its never gone above 55 for the last 5 years

what are you talking about bro. it has been 67 in w14 43.. fingers crossed nonetheless

 

[Zaki ali asghar]

please stop lol. and i thought this was an easy paper. VERY TRICKY!!!!!

 

[anastasia grey113]

what are you talking about bro. it has been 67 in w14 43.. fingers crossed nonetheless

well m talking abt just 42
not the other zones

 

[haithsoul]

well the ice also had to gain temperature right?
it rose from -18 to 23 so yh
v had to use that too

yes for the second part im talking about the third part did you just substitute E from second part and m then find L?

 

[Tauqir_hamed]

in that

well m talking abt just 42
not the other zones

ohh
also, in the specific heat capacity question, i think ive messed that up a bit.
Will I get a mark if I state the formula Q = ML

 

[anastasia grey113]

please stop lol. and i thought this was an easy paper. VERY TRICKY!!!!!

well b happy
the gt will be low at least
n those who saying the paper was easy
i bet they havent discussed it thoroughly like v did
i mean v were happy initially too right? thaz cuz v dint know wut v did wrong
dw it wont touch 60

 

[Holmes]

what are you talking about bro. it has been 67 in w14 43.. fingers crossed nonetheless

bro.

no not bro SIS~

 

[anastasia grey113]

yes for the second part im talking about the third part did you just substitute E from second part and m then find L?

lol no
i used E= mL as well as specific heat capacity
because ice gained energy to melt as well as to rise in temperature
so energy was distributed iukwim

 

[anastasia grey113]

btw in the first question i wrote that the Earth has a very large radius so the field lines appear parallel
and also for small changes in r the GM/r^2 does not change drastically
is that correct?

 

[Zaki ali asghar]

how did u guys label in the last q? was one with y intercept the initial one? and the one with peak which went down the unstable one and the one which leveled off was the last one right?

 

[Zaki ali asghar]

btw in the first question i wrote that the Earth has a very large radius so the field lines appear parallel
and also for small changes in r the GM/r^2 does not change drastically
is that correct?

Yes thats correct the exact same one came in 17 not sure M/J or O/N

 

[haithsoul]

lol no
i used E= mL as well as specific heat capacity
because ice gained energy to melt as well as to rise in temperature
so energy was distributed iukwim

ok ok makes sense i thought you were talking about part 2

 

[anastasia grey113]

how did u guys label in the last q? was one with y intercept the initial one? and the one with peak which went down the unstable one and the one which leveled off was the last one right?

the increasing one was last
the decreasing one was 1st
and the one with increased and then decreased was the intermediate

 

[Zaki ali asghar]

for Q1 last part is equating G.P.E to K.E and then finding v and then saying since it's lesser than the given velocity, it will escape. is this enough for 4 marks?

 

[anastasia grey113]

Yes thats correct the exact same one came in 17 not sure M/J or O/N

lol idr doing it but lol ok thank goodness

 

[anastasia grey113]

for Q1 last part is equating G.P.E to K.E and then finding v and then saying since it's lesser than the given velocity, it will escape. is this enough for 4 marks?

yh it should be
one mark must be for writing change in gpe = change in ke
and then for proving it to be 2.4 and writing wut u wrote = 3 marks
if u wrote the formula yes u got all 4

 

[Tauqir_hamed]

Yes thats correct the exact same one came in 17 not sure M/J or O/N

I wrote this :
THE LINES ARE RADIAL AND PERPENDICULAR TO THE SURFACE OF THE EARTH
g= GM/ ( R + h ) ^ 2..
h is extremely small compared to the Radius of the Earth
So, g is approximately constant

 

[anastasia grey113]

I wrote this :
THE LINES ARE RADIAL AND PERPENDICULAR TO THE SURFACE OF THE EARTH
g= GM/ ( R + h ) ^ 2..
h is extremely small compared to the Radius of the Earth
So, g is approximately constant

yh i missed the first point but wrote the rest

 

[Zaki ali asghar]

i think even after such intense discussion, our marks haven't dropped below 80 so it's all good i guess.