Physics: Post your doubts here!

[Zash Riyash]

How did you get it?

Understood?? For 4.(b) second part just that lambda formula nah

 

[Lyfroker]

For the first part I assume that it would be equal to the wavelength of light(from the spectrum)

That is what I thought as well but the ans is 0.3-3mm

 

[Zash Riyash]

Obviously because the wavelength of light is in a given range of 390nm. NANO METERS.

 

[Zash Riyash]

That is what I thought as well but the ans is 0.3-3mm

Did you understand 1(b) is it correct?

 

[Lyfroker]

Did you understand 1(b) is it correct?

Yes thnx

 

[Lyfroker]

Did you understand 1(b) is it correct?

Can you explain (d) as well

 

[Zash Riyash]

Can you explain (d) as well

I am not getting it, meaning I am not getting the correct answer. I tried solving it using: depth x density x gravity

But it's not working sorry! If you get the answer lemme know too!

 

[Lyfroker]

I am not getting it, meaning I am not getting the correct answer. I tried solving it using: depth x density x gravity

But it's not working sorry! If you get the answer lemme know too!

Ok

 

[Zash Riyash]

Ok

It's a one mark estimate question isn't it?

 

[Lyfroker]

It's a one mark estimate question isn't it?

Yes

 

[The Chill Master]

Guys I m confused like what do they mean by symbols in this

 

[TheJDOG]

Guys I m confused like what do they mean by symbols in this
View attachment 52573

Just like this:
a: acceleration
w: angular speed
x: displacement from rest position

 

[The Chill Master]

Just like this:
a: acceleration
w: angular speed
x: displacement from rest position

oh so only that Thanks a lot

 

[ashcull14]

 

[Lyfroker]

http://freeexampapers.com/A-Level/Physics/CIE/2002-Nov/9702_w02_qp_4.pdf

Q#2(b) & Q#5

 

[The Chill Master]

View attachment 52575

Because Cell A is charging Cell B and whenever a cell is charging we add both the e.m.f's .

 

[Lyfroker]

http://freeexampapers.com/A-Level/Physics/CIE/2002-Jun/9702_s02_qp_4.pdf

Q#6(a)

 

[Zash Riyash]

http://freeexampapers.com/A-Level/Physics/CIE/2002-Jun/9702_s02_qp_4.pdf

Q#6(a)

You're giving A levels as well? Also, did you figure out that estimate question?

 

[TheJDOG]

http://freeexampapers.com/A-Level/Physics/CIE/2002-Jun/9702_s02_qp_4.pdf

Q#6(a)

According to lenz's law, emf tends to oppose the change causing it, so here, sketch will just have opposite peaks, and when current is constant, no emf on sketch, since no emf is induced when there is no change

 

[Boss201]

Number 1 part (b)

i don't understand how to draw this current vector diagram and unable to resolve. pls help

a vector diagram will be appreciated.

Thanks