Physics, Chemistry and Biology: Post your doubts here!

[Ayesha Asif333]

Yeah i did them and to be honest Paper 42 was kinda hard.

View attachment 62225 Apparently , the HARDEST question to ever come in IGCSE physics according to my teacher. 100% of students have failed to solve this question.

Thank you both so much for adding to my stress!!

 

[Ayesha Asif333]

but use the value of worked answer if u wanna use it in the next part

yes, y waste ure time rounding off ..its useless

 

[Aayan Muttaqi]

I once saw a classified collection of physics questions. I didn't save the link, and I lost it. I need it for the momentum questions. If you know of any website or link please post it. I really need it.
Thank you.

 

[Aayan Muttaqi]

This question, for some reason, I found it incredibly mind-boggling.

The helium in the cylinder has a volume of 6.0 × 10^–3 m3^-1 (0.0060 m^3) and is at a pressure of 2.75 × 10^6 Pa. (i) The pressure of helium in each balloon is 1.1 × 10^5 Pa. The volume of helium in an inflated balloon is 3.0 × 10^–3 (0.0030 m3). The temperature of the helium does not change. Calculate the number of balloons that were inflated.

 

[Ayesha Asif333]

4 marks.

should be of 10 marks
but this ques was cool

 

[Ayesha Asif333]

This question, for some reason, I found it incredibly mind-boggling.

The helium in the cylinder has a volume of 6.0 × 10^–3 m3^-1 (0.0060 m^3) and is at a pressure of 2.75 × 10^6 Pa. (i) The pressure of helium in each balloon is 1.1 × 10^5 Pa. The volume of helium in an inflated balloon is 3.0 × 10^–3 (0.0030 m3). The temperature of the helium does not change. Calculate the number of balloons that were inflated.

same here...had to think alot abt it

 

[Ayesha Asif333]

s 2016/ 43/ q 4 part a part 2
anyone understands the graph?

 

[Aayan Muttaqi]

s 2016/ 43/ q 4 part a part 2
anyone understands the graph?

Take a point from the graph. A wholesome point. I took the point (0.10,2). Now, I have a value for pressure and a value for volume. The question asks us to determine the volume at 0.10 MPa . We know P1*V1=P2*V2 . Substituting gives us
2*0.10=0.10*V2
V2=2 m^3

 

[Aayan Muttaqi]

If you were able to extrapolate the graph until 0.10MPa , you would see that the volume will be 2 m^3.

 

[Ayesha Asif333]

Take a point from the graph. A wholesome point. I took the point (0.10,2). Now, I have a value for pressure and a value for volume. The question asks us to determine the volume at 0.10 MPa . We know P1*V1=P2*V2 . Substituting gives us
2*0.10=0.10*V2
V2=2 m^3

If you were able to extrapolate the graph until 0.10MPa , you would see that the volume will be 2 m^3.

Thank you
1, 0.2
5,0.04
10, 0.02. these points can also be used too
And yes, ure right abt the graph

 

[Adeen Atif]

Im so nervous for todays exam,But on the positive side this will be our last exam than we will be FREE!

 

[Adeen Atif]

http://mrtremblaycambridge.weebly.com/uploads/9/7/8/8/9788395/physics-igcse.pdf
Check this link it was quite helpful

 

[Ayesha Asif333]

http://mrtremblaycambridge.weebly.com/uploads/9/7/8/8/9788395/physics-igcse.pdf
Check this link it was quite helpful

Although the paper is now over i'll still thank you

 

[Ayesha Asif333]

Im so nervous for todays exam,But on the positive side this will be our last exam than we will be FREE!

Adeen, HOW WAS THE PAPER?

 

[dannyboy123]

Adeen, HOW WAS THE PAPER?

paper 42 was so shit

 

[Adeen Atif]

Adeen, HOW WAS THE PAPER?

I actually dont wanna be honest right now.
But I think I SCREWED THE PAPER!
How was yours?

 

[dannyboy123]

4

I actually dont wanna be honest right now.
But I think I SCREWED THE PAPER!
How was yours?

42 or 41?

 

[Ayesha Asif333]

paper 42 was so shit

My frnds in Pak say the same
Phy is just trash
Was it your last paper too?

 

[dannyboy123]

n

My frnds in Pak say the same
Phy is just trash
Was it your last paper too?

o i have environment managment

 

[Ayesha Asif333]

I actually dont wanna be honest right now.
But I think I SCREWED THE PAPER!
How was yours?

I'll lose max of 6 marks, i think
We got
No Dc motors question
no Ac generator question
no use of flemings rule
no scale diagram
no barometer/manometer question
No sch hc ques
Nothing related to force and extension
What more do we need?