Physics Paper 2

[Nirvanknight]

Hi guys! how was the physics paper 2??? mine was relatively okay! the easiest part was the section B compared to the section A

 

[Prince III]

Mine went tooooo good , Awsome
just one question in section A was the only difficult one for me !!

 

[Nirvanknight]

Mine went tooooo good , Awsome
just one question in section A was the only difficult one for me !!

@ Prince III: is it the question on Protostar, interstellar clouds??? i got it right but not so sure...it involves fusion oh hygrogen molecules... etc...

 

[Prince III]

Mine went tooooo good , Awsome
just one question in section A was the only difficult one for me !!

@ Prince III: is it the question on Protostar, interstellar clouds??? i got it right but not so sure...it involves fusion oh hygrogen molecules... etc...

yes !
that 4 mark question was very difficult for me because i didnt read about formation of it
the rest of mine paper is all correct

 

[ALIBABA007]

I think that section B was easier than section A

 

[axhynic]

btw what value was the acceleration in the first question?

 

[Prince III]

btw what value was the acceleration in the first question?

acceleration = change in velocity / time

change in velocity was calculated in (b) part and time was given

so we could calculate the answer
i dont remember the excat values of change in velocuty and time
if you remember please tell me

 

[Brains]

was the acceleration = -2307 ?

please say yes!

 

[ALIBABA007]

Can anyone tell me what was the second diagram in the last question in section B ?????????

 

[Prince III]

Can anyone tell me what was the second diagram in the last question in section B ?????????

 

[Prince III]

was the acceleration = -2307 ?

please say yes!

do you remember the
initial speed of the ball, the final velocity of the ball and the time when the ball was in contact with bat ?

 

[Mohsin]

Q.what is meant by background radiation?
A. these are those radiation which are from environment for example from rocks of a mountain , from cosmic rays from the sun .


is my answer correct and i wrote cosmatic instead of cosmic
would that be wrong ?

 

[karthik]

Mine went tooooo good , Awsome
just one question in section A was the only difficult one for me !!

@ Prince III: is it the question on Protostar, interstellar clouds??? i got it right but not so sure...it involves fusion oh hygrogen molecules... etc...[/qu

This is the answer for 4 marks
>Hydrogen is less dense than air so it rises up into the space
> A set of hydrogen atoms fuse together due to the high energy in space
>The fused hydrogen forms HELIUM releasing energy
>The HELIUM fuses with more helium atoms forming stars on the space

 

[karthik]

GUYS I GOT THE ACCELERATION IN NEGATIVE ANSWER NOW DO I HAVE TO REMOVE THE NEGATIVE SIGN DURING SUBSITUTION WITH THE FORMULA
F=MA

 

[Mohsin]

guys was the initial speed of ball 25m/s and final speed 22m/s ?

or

was the initial speed of ball 22m/s and final speed 25m/s

 

[Pals_1010]

Hey guys..

Do you remember your answers from section A? would like to discuss them. Section A was so much harder than Sect. B!!!
Shouldnt it be the other way round???

(I do the paper 22 for Mauritius)

 

[karish]

hey guys can you tell me how u did the question on moment plzzzz

 

[Prince III]

hey guys can you tell me how u did the question on moment plzzzz

first we have to calculate the weight of the fireman , his mass was given so weight could be calculated

when weight was calculated then we have to calculate the clockwise moment which would be calculated by
5 x (weight) = what everthe answer was


then the question stated that the wall was exerting an opposite force which made the equlibrium

so we have to calculate the force which was exerted by the wall

as it was in equlibrium
clockwise moment = anticlockwise moment
5 x (weight) = 12 x Force


force = 5 x (weight) / 12


NOTE : i dont remember the excat weight that is why i have not wriiten it's value !

 

[Prince III]

Hey guys..

Do you remember your answers from section A? would like to discuss them. Section A was so much harder than Sect. B!!!
Shouldnt it be the other way round???

(I do the paper 22 for Mauritius)

ask the questions on which you are not sure

 

[Pals_1010]

The first question with the cricketer i think?
the initial speed of the ball was 25 m/s. and the final 22 m/s?
Find the acc and force etc...