Physics Paper 2

[Leone]

And also on that fireman question there was a question regarding his jacket and shirt right... I wrote that the shirt traps air and as air is a poor conductor of heat the fireman is prevented from heat... and the jacket being white coloured absorbs less heat so that the jacket also prevents the fireman from heat... What do you say???

 

[Prince III]

And also on that fireman question there was a question regarding his jacket and shirt right... I wrote that the shirt traps air and as air is a poor conductor of heat the fireman is prevented from heat... and the jacket being white coloured absorbs less heat so that the jacket also prevents the fireman from heat... What do you say???

correct

 

[Leone]

And one more question... How much was the resultant force and direction in the section B first question??? I drew a parallelogram with the force exerted by the people upwards on a 10 degree direction. I wrote my own scale... As a direction I got 5 degree. My answers may be wrong... But still I drew a parallelogram of the scale I used and wrote the direction and everything in my parallelogram which was 5 degree. The resultant force I remember 42000 something... It was a difficult question for me... I took the magnitude and converted it into newtons as the resultant force. My another question is for the scale and all will I get any marks do you think???

 

[Pals_1010]

Hey does anyone remember the weight of the bus for the Section B question plzz?

 

[Prince III]

Hey does anyone remember the weight of the bus for the Section B question plzz?

320000 N
and force by people was 170000 N

 

[Pals_1010]

Are you sure?????? Its not 32000 N and 17000 N???

 

[Pals_1010]

Hi by the way Prince

 

[Prince III]

Are you sure?????? Its not 32000 N and 17000 N???

ohh sorry you are right !! i put on an extra O(zero) !

 

[Pals_1010]

U nearly gave me a heart attack!!!! Thx dude

 

[Prince III]

U nearly gave me a heart attack!!!! Thx dude

haha sorry dude

 

[Depletion]

wat about the question on light in section B???
the ray of light gets REFLECTED and the image is formed at a lower height//
-so that the tourist may see the pattern clearly ???

 

[Prince III]

wat about the question on light in section B???
the ray of light gets REFLECTED and the image is formed at a lower height//
-so that the tourist may see the pattern clearly ???

i didnt did that question otherwise i would certainly tell you the answer

 

[Depletion]

no probsss!!!

 

[bamteck]

What was the horizontal force acting on the fireman?

 

[Prince III]

What was the horizontal force acting on the fireman?

firstly it was vertical force
secodly it was not on fireman, they askhed a third force in the system

which was Weight of the ladder

 

[Pals_1010]

I did that question.. Yeah i wrote the same thing as you... Great

 

[usama1993]

Hey guys...please check this DIAGRAM...
i have drawn it in the first question of SEC B in which the pushing of bus was discussed.
This is the answer of the part which said "USE A GRAPHICAL METHOD TO FIND THE RESULTANT FORCE OF THE WEIGHT OF BUS AND THE PEOPLE'S PUSHING FORCE'="...
Please check it...

sorry you have done this wrong
your both direction and resultant would be wrong

you have not looked that the forces were in opposite direction

see the below method

how is this possible yar????
wieght is downward and the force by people should be ahed of weight\

isnt it?

 

[Heshna]

hey guys..for the question on rectifier ...(section B last question)...I had drawn a circuit with a diode,a variable resistor, a switch and a lamp....Is it good ????

 

[Prince III]

hey guys..for the question on rectifier ...(section B last question)...I had drawn a circuit with a diode,a variable resistor, a switch and a lamp....Is it good ????

that is all what you drew ?
if this is all what you drew then you would be given just 1 mark for the diode

the correct diagram is as below !!

 

[Prince III]

Hey guys...please check this DIAGRAM...
i have drawn it in the first question of SEC B in which the pushing of bus was discussed.
This is the answer of the part which said "USE A GRAPHICAL METHOD TO FIND THE RESULTANT FORCE OF THE WEIGHT OF BUS AND THE PEOPLE'S PUSHING FORCE'="...
Please check it...

sorry you have done this wrong
your both direction and resultant would be wrong

you have not looked that the forces were in opposite direction

see the below method

how is this possible yar????
wieght is downward and the force by people should be ahed of weight\

isnt it?

dude altough you have got it right that weight is acting downwards and force by people ahead but you have not drawn the resultant force correctly

you neglected the fact that the component forces were in opposite direction , so you have to complete a parrallegram