Search found 384 matches
- Wed Nov 02, 2011 8:54 am
- Forum: Chemistry
- Topic: Polymer Edge
- Replies: 0
- Views: 2052
Polymer Edge
Are the edges of any polymer(star with a simple one like poly-ethene) is attached with each another? or do they have other thing attached with it? Like, (-CH2-CH2-CH2-CH2-)n we have more -CH2- beside each edge on that structure; but what is the structure of the last portion of it? for example in ful...
- Wed Nov 02, 2011 8:53 am
- Forum: Physics
- Topic: Can't Understand:cause of Superconductivity(and other)
- Replies: 1
- Views: 2840
Can't Understand:cause of Superconductivity(and other)
"One explanation for superconductivity is that the electrons that make up the current move in coordinated pairs. One of the electrons in a pair may electrically distort the molecular structure of the superconducting material as it moves through, creating nearby a short-lived concentration of positiv...
- Wed Nov 02, 2011 8:52 am
- Forum: Chemistry
- Topic: About Mackovnikov's Rule
- Replies: 1
- Views: 8817
About Mackovnikov's Rule
According to Markovnikov's rule te followed reaction would be like this: $CH_3 - CH_2 - CH_3$ $+ Br$ $\rightarrow$ $CH_3 - CH_2 - CH_2 - Br$ 3% $+$ $ CH_3 - CH -BrCH_3$ (2-bromo propane 97%) and the production rate is different for different material. How can we know what would be the production rat...
- Wed Nov 02, 2011 8:51 am
- Forum: Chemistry
- Topic: Teflon:why we use in fry pan
- Replies: 5
- Views: 4717
Teflon:why we use in fry pan
Teflon creates hinderance in conductivity of heat though it is non-sticky. Why do we use that in fry pan then?
- Mon Oct 31, 2011 3:56 pm
- Forum: National Math Camp
- Topic: বাংলাদেশ অনলাইন ক্যাম্প - ২০১১
- Replies: 105
- Views: 59938
Re: বাংলাদেশ অনলাইন ক্যাম্প - ২০১১
murrihead will be on 1 nov and exam on 2 ?! is it final?(it would be better if the exam is moved to friday)
- Mon Oct 31, 2011 3:38 pm
- Forum: National Math Camp
- Topic: Day-1 [Bangladesh Online Math Camp-2011]
- Replies: 18
- Views: 10341
Re: Day-1 [Bangladesh Online Math Camp-2011]
for ex 1.6(new) go to viewtopic.php?f=14&t=1329
- Mon Oct 31, 2011 3:37 pm
- Forum: National Math Camp
- Topic: Day-1 [Bangladesh Online Math Camp-2011]
- Replies: 18
- Views: 10341
- Mon Oct 31, 2011 3:36 pm
- Forum: National Math Camp
- Topic: Day-1 [Bangladesh Online Math Camp-2011]
- Replies: 18
- Views: 10341
Re: Day-1 [Bangladesh Online Math Camp-2011]
for discussion of ex 1.11(new) follow viewtopic.php?f=14&t=1331
- Mon Oct 31, 2011 3:34 pm
- Forum: National Math Camp
- Topic: exercise 1.23 BOMC (in new book it is 1.25)
- Replies: 7
- Views: 4874
Re: exercise 1.23 BOMC (in new book it is 1.25)
got very excited solving the previous exercises in a single attempt! but coming across this one seemed pretty hard for me. got something like this: I first tried to simplify those terms and thought they'd fix into that fancy AM-GM technique. But several times I've found the same thing that I've star...
- Mon Oct 31, 2011 3:32 pm
- Forum: National Math Camp
- Topic: Complex number in inequalities [Section-1, BOMC-2011]
- Replies: 7
- Views: 5221
Re: Complex number in inequalities [Section-1, BOMC-2011]
what is that inequality about? how $i^i$ is a real number? what is magnitude of complex number? what do you mean by "defining < or > "? < is always "<" right?! or sometimes is that sometimes it becomes ">" !? or we are just defining those complex numbers...i.e. which one is bigger.