Biology; Chemistry; Physics: Post your doubts here!

[***amd***]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_12.pdf
Q34

 

[Afnan Hafiz]

I am utterly confused......

 

[Afnan Hafiz]

thora thora pallay par gya shukiya
Alhamdulillah

Does this mean you understood?

 

[Afnan Hafiz]

Suppose u run downhill. By the time you reach bottom GPE --> KE. Some energy is lost as heat energy in conversion. So, GPE --> KE + Heat. Doesnt that make sense

Yes it does... but why is the answer C? I mean, even i was thinking that maybe the answer is B ..............

 

[***amd***]

Does this mean you understood?

yes, kinda .-.

 

[Afnan Hafiz]

http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_12.pdf
Q34

Haven't reached this chapter yet..

 

[Afnan Hafiz]

yes, kinda .-.

 

[Afnan Hafiz]

No idea.

Well, is there any comment on the answer in the marking scheme?

 

[***amd***]

.-.

 

[Afnan Hafiz]

.-.

What does this mean?

 

[Dark Destination]

What do we need to know about Electromagnetic waves?

 

[***amd***]

C'mon answer my magnetism q. >:O

which one

What does this mean?

got an intuition about why i was wrong, and why the other option would be the answer. I'm just "not satisfied".

 

[***amd***]

What do we need to know about Electromagnetic waves?

I think its just their uses we need to know. and their sequence, highr/ lower freq./wavelength

 

[Laibaaa]

What do we need to know about Electromagnetic waves?

Umm its sequence, properties, like which has highest freq, wavelength etc. Also its uses and dangers. I think thats all.

 

[Afnan Hafiz]

which one

got an intuition about why i was wrong, and why the other option would be the answer. I'm just "not satisfied".

I see...

 

[Afnan Hafiz]

if there is a box (metal/magnetic material one I think) why will magnetic field lines pass thru it?

The magnet will create a magnetic field around the object. There is a magnetic relationship between the magnet and the metallic object because of their similar properties.. This s why the metal object allows magnetic field lines to pass thru it.

 

[***amd***]

if there is a box (metal/magnetic material one I think) why will magnetic field lines pass thru it?

megnetism is induced in it. and its poles become like North towards South of magnet, and South towards north of magnet. thus field lines pass through it.

 

[***amd***]

chalo sabash, ab saray fajr parho or so jao
Allah Hafiz

 

[Afnan Hafiz]

chalo sabash, ab saray fajr parho or so jao
Allah Hafiz

Good luck with your exams, Ahmad!

 

[Dark Destination]

Advantages of underground transmission?