# Edexcel IAL Physics Unit 2 - 17th May 2019Watch

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5 days ago
#41
(Original post by Luciferrr)
IT WAS TERRIBLE! I feel I'm failing.
I failed it in Jan.. so it's fine 😭😂😂
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#42
This one was like 1000x harder than Jan paper tbh.
I wonder which smartass thought of such paper.
(Original post by ameer10)
I failed it in Jan.. so it's fine 😭😂😂
0
5 days ago
#43
Mm for V=IR which value of R should i use? 🙈
(Original post by ameer10)
C
you need to find the total current in the circuit which is EMF/total resistance.
To find total resistance, you should apply 1/6 + 1/6 and reciprocate it and multiply by 1000.
Then add the other 3000 resistance so I = 12/9000.
Use the current and apply V=IR
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5 days ago
#44
(Original post by dsn_o_u_r_e_e_n)
Mm for V=IR which value of R should i use? 🙈
3000ohm because you want to find V across it
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5 days ago
#45
(Original post by Luciferrr)
This one was like 1000x harder than Jan paper tbh.
I wonder which smartass thought of such paper.
Really? Edexcel should really get a grip and make an easy paper for October
0
#46
Fr. All the best!
(Original post by ameer10)
Really? Edexcel should really get a grip and make an easy paper for October
0
5 days ago
#47
(Original post by Luciferrr)
Fr. All the best!
You too! 😊
1
5 days ago
#48
You Are My Saviour!🏆
(Original post by ameer10)
3000ohm because you want to find V across it
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5 days ago
#49

Which & why?
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5 days ago
#50
(Original post by dsn_o_u_r_e_e_n)

Which & why?
C.
Because they are asking at the fundamental frequency so there are 2 antionodes on the ends and one node in the middle.
the distance between 2 antinodes is y/2.
so L=y/2 .. rearrange it gives 2L = y (y is lambda btw)
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5 days ago
#51
How do I know its fundamental?
(Original post by ameer10)
C.
Because they are asking at the fundamental frequency so there are 2 antionodes on the ends and one node in the middle.
the distance between 2 antinodes is y/2.
so L=y/2 .. rearrange it gives 2L = y (y is lambda btw)
0
5 days ago
#52
(Original post by dsn_o_u_r_e_e_n)
How do I know its fundamental?
They mentioned in the question. Lowest possible frequency of standing waves
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5 days ago
#53
Mm so if lowest frequency means fundamental, then what are other things that mean like these. Did you get my question? Umm I meant what are the other words for frequency for which I'd understand the related meanings to find out lambda and can find out the length
(Original post by ameer10)
They mentioned in the question. Lowest possible frequency of standing waves
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5 days ago
#54

Isn't this Doppler Effect?
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5 days ago
#55
(Original post by dsn_o_u_r_e_e_n)

Isn't this Doppler Effect?
Anything which has to do with an observer and frequency changing it is Doppler effect
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5 days ago
#56
What is the time now in your country?🤔
(Original post by ameer10)
Anything which has to do with an observer and frequency changing it is Doppler effect
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5 days ago
#57
(Original post by dsn_o_u_r_e_e_n)
What is the time now in your country?🤔
10:59 PM
you?
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5 days ago
#58
2.07 am btw I'm from Bangladesh 😁
(Original post by ameer10)
10:59 PM
you?
0
5 days ago
#59
15579521704476314681273992008484 .jpg
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5 days ago
#60
Why and what?
0
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