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ALL PHYSICS DOUBTS - POST HERE !!

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Vin:

--- Quote from: Baladya on May 26, 2010, 09:54:25 pm ---http://www.freeexampapers.us/IGCSE/Physics/CIE/2009%20Nov/0625_w09_qp_31.pdf
Can u plzz help, m totally stuck at this question and need to understand it fully cuz if i dont then m *** up tommorow :S

10)c)d)e)
first at C) how can we get Energy when we dont have time?
Then i get confused by the repeating stuff in the other questions

plz explain in a simple way cuz  m confused :S

Thankssss :)

--- End quote ---

u got afternoon right ?? thn i;ll do this tmw (for me). . im off to sleep ;)
like ang3l said use

H= I^2R

H is loss of heat energy ;)

diva_sparkles:

--- Quote from: Baladya on May 26, 2010, 10:05:00 pm ---cmon plzzz help   ::)

--- End quote ---
rate of loss of energy is the definition of power so thts how u do it!!!

Helium:

--- Quote from: red_911 on May 26, 2010, 09:49:21 pm ---hey can anyone explain me question 9(C) (2) ? ??? 0625/31/M/J/08

--- End quote ---

You can use fleming left hand rule to find the movement of the flexible wire.

-Point first finger in  the direction of the magnetic field (from n to s)
-rotate your hand about that your finger until your second finger points in the direction of the Current.

then your thumb points in the direction of the movement of wire

Malak:

--- Quote from: Baladya on May 26, 2010, 10:06:02 pm ---ya okay, but thats for power, but they said energy??

--- End quote ---

Energy loss = I^2 R
thats how it is in my text book :P

Baladya:

--- Quote from: ~VIN1094~ on May 26, 2010, 10:07:20 pm ---u got afternoon right ?? thn i;ll do this tmw (for me). . im off to sleep ;)
like ang3l said use

H= I^2R

H is loss of heat energy ;)


--- End quote ---

k thx all :P Vin plz stay alive for tommorow :D xD jk :P but plz help tommorow :P

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