Physics: Post your doubts here!

[Wolfgangs]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s08_qp_1.pdf
26

 

[Thought blocker]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s08_qp_1.pdf
26

26)
I ¹/α x² so, doubling x means I would be divided by 4.
I α A² so, √(8²/4) = √16 = 4.0 μm

This can also be done like this :¬

I1/ I2 = A1² / A2²
1/(1/4) = 8² /x²
4/8² = 1/x²
x²= 16
x= √16
x= 4.0 μm

 

[_Ahmad]

Thought blocker

can you explain how
to change
I=power/area to I=A^2/S

 

[Thought blocker]

Thought blocker

can you explain how
to change
I=power/area to I=A^2/S

What is the question ?

 

[_Ahmad]

What is the question ?

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s13_qp_11.pdf

Q24

 

[Thought blocker]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s13_qp_11.pdf

Q24

24)
intensity 1/α area and α amplitude squared
dividing area by 3 cause the power per unit area (i.e intensity) to increase by a factor of 3 and, increasing the amplitude by 2 causes the intensity to increase by a factor of 4
--> therefore (4x4)P=12P

 

[_Ahmad]

http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s12_qp_12.pdf

Q23

 

[Thought blocker]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s12_qp_12.pdf

Q23

P = ρgh + Atmospheric P
P = 1000*10*5 + 100000 = 150000 = C

 

[MYLORD]

P = ρgh + Atmospheric P
P = 1000*10*5 + 100000 = 150000 = C

do u know where i can physics formulas
Pls hurry

 

[MariamMalik]

how did physics paper 12 go? i found it really hard :/

 

[Thought blocker]

do u know where i can physics formulas
Pls hurry

https://www.xtremepapers.com/commun...sion-for-physics-and-chemistry-paper-1.33891/

 

[Thought blocker]

how did physics paper 12 go? i found it really hard :/

i'll get around 35 mene 5 tuke lagaye . _ .

 

[MYLORD]

https://www.xtremepapers.com/commun...sion-for-physics-and-chemistry-paper-1.33891/

thnnnnnnxxxxxxxxxxxxxxxxxx soooooooooooooo muuuuchhhhhh

 

[MariamMalik]

I wonder what the grade threshold will be for it

 

[MYLORD]

I wonder what the grade threshold will be for it

for p-11 ????!

 

[Thought blocker]

I wonder what the grade threshold will be for it

Around 30 maybe..

 

[MariamMalik]

no, for paper 12, i just gave it, i found it difficult

 

[MYLORD]

i'll get around 35 mene 5 tuke lagaye . _ .

u r like only 5 left but others r crying due to lack of time for 10 questions !!!!
I think u should lend us some of ur brains to get 39/40

 

[MariamMalik]

Around 30 maybe..

what was the answer for that question where this wave was given and we had to find the intensity?

 

[Thought blocker]

what was the answer for that question where this wave was given and we had to find the intensity?

Lol... gimme detail