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From: vish4Reply 1 of 9Reply
Subject: Contributed Answer/Explanation to Q. 1
   Joules, denoted as J

Posted at: Wed Dec 23 07:47:00 2009 (GMT)

From: vish4Reply 2 of 9Reply         View replies (1)
Subject: Contributed Answer/Explanation to Q. 2
   m =1kg,

Posted at: Wed Dec 23 07:52:28 2009 (GMT)

From: vish4Reply 3 of 9Reply
Subject: Contributed Answer/Explanation to Q. 2
   ANSWER :-
   <P> m =1kg,                                      
                                                    
                                       h=5m            
                                                     
                                                    
                     g =9.8m /s                          
                                                    
                                                   P.E=
   mgh                                                
                                                    
                             P.E =1  5  9.8             
                                                    
                                                    
       P.E= 49J  </P>

Posted at: Wed Dec 23 08:07:53 2009 (GMT)

From: ratchetReply 4 of 9Reply
Subject: Contributed Answer/Explanation to Q. 3
   Zero
   No work is done.

Posted at: Sun Feb 7 02:06:12 2010 (GMT)

From: ratchetReply 5 of 9Reply
Subject: Contributed Answer/Explanation to Q. 5
   Example
   Sugar tongs

Posted at: Sun Feb 7 02:07:52 2010 (GMT)

From: ratchetReply 6 of 9Reply
Subject: Contributed Answer/Explanation to Q. 10
   Answer
   The boiling point of the water is 150o C

Posted at: Sun Feb 7 02:10:10 2010 (GMT)

From: ratchetReply 7 of 9Reply
Subject: Contributed Answer/Explanation to Q. 11
   At the region DE melting takes place

Posted at: Sun Feb 7 02:10:45 2010 (GMT)

From: ratchetReply 8 of 9Reply
Subject: Contributed Answer/Explanation to Q. 45
   Answer
   Critical angle is the angle of incidence in the denser medium corresponding
   to the angle of refraction in the rarer medium is 90o

Posted at: Sun Feb 7 02:54:59 2010 (GMT)

From: ratchetReply 9 of 9Reply
Subject: Contributed Answer/Explanation to Q. 51
   Answer
   According to Ohm's law the current flowing in a conductor is directly
   proportional to potensial difference across its ends provided the physical
   conditions and the temparature remains constant 

Posted at: Sun Feb 7 03:00:02 2010 (GMT)

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