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A2 Physics | Post your doubts here

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Now now, lets not get dramatical :p Im not hurt :D
Uhmm I have an endorsed Cambridge book, by David Sang , graham jones, richard woodside and gurinder chadha.
oh that's fine then..no worries.. ;)

btw assalamoalaikum wr wb! :D
 
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oh , how can I top that salam. Then Ill just say the same :) wa-alykumessalam warahmatullah wabaraktuh!
:D

that's actually the best way to say salam ;)
i'm sure you remember that incident...of holy prophet peace be upon him :)

30 hasanat for saying this (y)
 
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well i have some doubts in communication chapter.........what has bandwidth to do with quality cos i always thought it has to do with the transmission capacity....if u have got high bandwidth u cn transmit more information.....bt books and ms says fm has greater bandwidth so greater quality........................
secondly one ms says for sky waves that poor reception in hilly areas......while question said why we made a switch from ionospheric reflection to space waves using satellites......now the doubt in my mind is that tthe space waves are of even shorter wavelengths so they are essentially line os sight,,,,isnt it
At greater frequencies, bandwidth is higher means more information can be carried per second. In case of FM, the quality increases because with higher bandwidths of FM, sounds of greater frequencies can be broadcasted. With the limited bandwidth of AM sounds of only about 4.5 KHz can be broadcasted. High quality music notes contain frequencies as high as 15 kHz so FM has better quality as these higher notes can be broadcasted..
 
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rms speed at T= 300 is 500
to change rms speed into <c^2> square the rms speed
so twice rms means = 4<c^2>
we knw that <c^2> is directly proportional to T
so T1/T2= <c^2>/4<c^2>
put the values and you will get the answer.

Jazzakallah Bakhair
Thanks A lot Brother
 
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well Explain why the circular motion of the conical pendulum has the same frequency as the simple
pendulum.
 
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Can someone pls answer the last part of Q4....exam style question in chadha's book...Chapter 24 capacitance??
 
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WELL this question suggest we must memorise that table in booklet
 

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well o/n 04 telecommunication....chek this ppr must,.....quite tricky questions
 
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tell frequency of info signal and unmodulated carrier wave
 

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How do we answer questions asking suggest why? Is there like a list of suggestions that we can memorize?
 
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