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ALL PHYSICS DOUBTS - POST HERE !!

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6394:

--- Quote from: deadman786 on May 25, 2010, 07:28:32 pm ---
hahaha thanks!!!!!!!! U're a life saver. Just 1 final thing, this explains why a capacitor won't charge with AC cause it will prevent accumulation of charges right?? Meaning it will charge and discharge??? And to produce an induced EMF, is it necessary to use an alternating field (the one provided by AC)?? Since DC will not produce an alternating field and no induced EMF right????

--- End quote ---
my txt bk says dat capacitor will nt wrk wid dc n will wrk wid ac
<Cambridge IGCSE Physics- Tom DUncun   pg 196 :P :P :P :P lol>

8T:

--- Quote from: ~VIN1094~ on May 25, 2010, 07:29:41 pm ---See its a metal ball .. it doesnt hav a pole until another magnet 'sticks' to it .. S or N .. doesnt matter for the ball

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Thanks 4 the effort .. I get it Now (:

igext:
can some one tell me what is the purpose of the core in a transformer?

Helium:
 
Question, can anyone solve and scan ,
or at least explain how to do it, (dont worry i'll understand)

igext:

--- Quote from: Helium on May 25, 2010, 07:39:27 pm ---
Question, can anyone solve and scan ,
or at least explain how to do it, (dont worry i'll understand)

--- End quote ---
the resultant of these 2 forces is actually the weight of the box or wht ever being lifted

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