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coz t1/2 is very long ...wen ever time taken for a substance to become half is vey long in magnitude then its activty appears to be contant...http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Physics (9702)/9702_w06_qp_4.pdf Q8 b..PLZ EXPLAIN! why isnt anyone asnwering my questions?
walkum aslam
??? pplplz answer me...
The problem with me was that I was looking at the ac wave which is measured by a voltmetre of fixed polarity.i think you're still confused...
waeyyakum..aameen!
May Allah make the exam easy for you too and give you the good what u desire...
because acceleration has to be proportional to displacement. For example the further away you full a pendulum, the faster the rate it will move down!??? pplplz answer me...
The problem with me was that I was looking at the ac wave which is measured by a voltmetre of fixed polarity.
But the polarity of a.c changes, so with respect to the diode, the negative half cycle, that is measured by the voltmeter , is positive.
I already understood all of what you were trying to explain, but I wasnt clear enough to my issue haha.
Im sorry for using up your time, brother, but Allah will InshAllah reward you
because there is a small pd across the diode 0.7 incase of silicon I think. 2 diodes = 1.4 voltage drop
No no i got it, i just said the answer to my problem. That the wave of the ac is measured by a voltmeter of fixed polarity.it's ok...so u still confursed?
what's exactly confusing you..u don't look at the graph for ac...
look at the circuit..and try to point ur finger and see...how the current flows...
exactly...
oh yes ....thanks...because acceleration has to be proportional to displacement. For example the further away you full a pendulum, the faster the rate it will move down!
I also thought the same
lets think it out.. hmmmand i didn't even think
i just saw the ms and wrote a note that question removed
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