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## Discussion topic: Contributed Answer/Explanation to Q. 21

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 <<  <  Page 16 of 16 From: deep75 Reply 301 of 310 Reply Subject: Contributed Answer/Explanation to Q. 5 ``` (1)=electrical energy into heat energy,(2)=sound energy into electricalenergy ```Posted at: Sun Feb 6 10:07:28 2011 (GMT) From: deep75 Reply 302 of 310 Reply Subject: Contributed Answer/Explanation to Q. 9 ``` d=45km v=3*10 8 t=2d v t=3*10-4 d=45kmv=3*10 8t=2d      vt=3*10-4```Posted at: Sun Feb 6 10:15:28 2011 (GMT) From: shruti15 Reply 303 of 310 Reply Subject: Contributed Answer/Explanation to Q. 38 ``` the use of electromagnet -in current generating station and electric bell ```Posted at: Sun Feb 6 15:24:52 2011 (GMT) From: digant Reply 304 of 310 Reply Subject: Contributed Answer/Explanation to Q. 1 ``` kg m/s. ```Posted at: Mon Feb 7 15:00:35 2011 (GMT) From: digant Reply 305 of 310 Reply Subject: Contributed Answer/Explanation to Q. 1 ``` kg m/s. ```Posted at: Mon Feb 7 15:00:38 2011 (GMT) From: digant Reply 306 of 310 Reply Subject: Contributed Answer/Explanation to Q. 2 ``` Kg m/sec2 ```Posted at: Mon Feb 7 15:01:40 2011 (GMT) From: vidh_tutorials Reply 307 of 310 Reply Subject: Contributed Answer/Explanation to Q. 1 ``` Kg mt per sec Linear momentum (p) is the product of Linear velocity(V) and the Mass (M)   p=MxV p=Kg-m/s ```Posted at: Thu Feb 10 06:12:35 2011 (GMT) From: vidh_tutorials Reply 308 of 310 Reply Subject: correction to lekhagopi ``` Dear lekhagopi, i believe there is a typo in the above expalanation it should have been p = kg × m/s = kg ms‾1 ```Posted at: Thu Feb 10 06:14:13 2011 (GMT) From: anjani27 Reply 309 of 310 Reply Subject: Contributed Answer/Explanation to Q. 1 ``` kgm/s because linear momentum(p)=mass*velocity   ```Posted at: Fri Feb 18 15:22:11 2011 (GMT) From: anjani27 Reply 310 of 310 Reply Subject: Contributed Answer/Explanation to Q. 2 ``` kgm/s2 ```Posted at: Fri Feb 18 15:24:07 2011 (GMT) <<  <  Page 16 of 16