physics and chemistry doubts!!

[Phoenix Blood]

No!

330 m/s. Mistake.

 

[Phoenix Blood]

Awesome12 Explain Pl.

 

[Phoenix Blood]

How?

 

[Faiza Anwar]

How do I draw the vector diagram for MAY JUNE 2013 QUESTION 3B?

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s13_qp_33.pdf

#Hello090078601

 

[queen of the legend]

View attachment 43095

Awesome12 Explain Pl.

whic one seems to be incorrect now ?

 

[Faiza Anwar]

View attachment 43095

Awesome12 Explain Pl.

compass needle will always point in the same direction as the field lines !! view attachment !!

 

[Faiza Anwar]

the

View attachment 43095

Awesome12 Explain Pl.

attacment which i shared was for another question,, but remember that compass needle always points in the direction of field lines...

 

[Awesome12]

View attachment 43095

Awesome12 Explain Pl.

D
Think of it like this; the N pole of the compass (the head) will attract or point towards the S pole of the magnet. In D this is not happening

 

[Faiza Anwar]

D
Think of it like this; the N pole of the compass (the head) will attract or point towards the S pole of the magnet. In D this is not happening

may God help u and all of us..

 

[Faiza Anwar]

DO we have the experiment for sp. latent heat of vaporization in syllabus??

 

[Faiza Anwar]

what is the best thing to write in ans for... why does the dust particles does not settle down in brownian motion ?

 

[Faiza Anwar]

View attachment 43096

How?

i also need explanation for this Question.. someone help plzz....

 

[Faiza Anwar]

WHERE IS EVERY ONE ??

 

[Faiza Anwar]

some one plzz give the examples of light sensing nd temp sensing circuits... fast !!

 

[gary221]

some one plzz give the examples of light sensing nd temp sensing circuits... fast !!

Generally speaking? The best use for both is alarms. Do you have a specific question in mind?
Anyway, try going through your syllabus... and see if this might help
http://www.physicsatweb.com/rev.php?id=Electric+Circuits&v=true

 

[gary221]

i also need explanation for this Question.. someone help plzz....

Is the ans D?

 

[Faiza Anwar]

Is the ans D?

idk !

 

[gary221]

idk !

Well, I think it is.
And the reason being that to discharge electrons from the cathode, a very high voltage is required, which eliminates A and B.
Also, since in a cathode ray, the two electrodes are fixed... ie cathode and anode do not change → unidirectional current is used.
Which means dc aka D.

 

[Faiza Anwar]

Generally speaking? The best use for both is alarms. Do you have a specific question in mind?
Anyway, try going through your syllabus... and see if this might help
http://www.physicsatweb.com/rev.php?id=Electric Circuits&v=true

thankyou very much !

 

[Faiza Anwar]

when electricity is transmitted through large distance what is the voltage ( high r low) nd type of current ( ac or dc) ?