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Catalogs Discussion Forums -> Optics -> H. C. VERMA RAY OPTICS -> Go to message
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 please complete your question 

Catalogs Discussion Forums -> Electricity -> Is elcricity can pass through your hairs -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 wet human  hairs are good coductor ,

 

Catalogs Discussion Forums -> Mechanics -> Important -> Go to message
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 All electronic items like fan also  run mainly on DC. But they have built in rectifiers and filters that convert AC to DC as AC is more easily available and can be transported easily when compared to DC (Since losses are lower in AC). 

Catalogs Discussion Forums -> Thermal Physics -> veryyy urgentt!!! -> Go to message
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 please post the image of the arrangement of the five rods

Catalogs Discussion Forums -> Organic Chemistry -> funda -> Go to message
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charge. Carbocations are generally unstable because they do not have eight electrons to
satisfy the octet rule.
open octet on carbon
B.File:Methyl cation.svg 
Catalogs Discussion Forums -> Organic Chemistry -> jyoti -> Go to message
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Hofmann Elimination

. This elimination reaction of alkyl trimethyl amines proceeds with anti-stereochemistry, and is generally suitable for producing alkenes with one or two substituents. The reaction follows the Hofmann Rule.


Mechanism of the Hofmann Elimination

Catalogs Discussion Forums -> Organic Chemistry -> what is markonioff rule? -> Go to message
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 Markownikoff rule

‘In the addition of hydrogen halides to unsymmetrically constituted [unsaturated]
hydrocarbons, the halogen atom becomes attached to the carbon
bearing the lesser number of hydrogen atoms.’ Originally formulated by
Markownikoff (Markovnikov) to generalize the orientation in additions of
hydrogen halides to simple alkenes, this rule has been extended to polar
addition reactions as follows. ‘In the heterolytic addition of a polar molecule
to an alkene or alkyne, the more electronegative (nucleophilic) atom
(or part) of the polar molecule becomes attached to the carbon atom bearing
the smaller number of hydrogen atoms
Catalogs Discussion Forums -> Integral Calculus -> please help me.. -> Go to message
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 let I =

            use the concept of integration by part 

                

Catalogs Discussion Forums -> Differential Calculus -> dy/dx as rate measurer -> Go to message
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 after 4 min.

  volume =12 = pi r^2h/3

               r=h because virtical angle is 90

                 12=1/3pih^3 

                now from here find the value of h...........

                  now , rate change of volume is 3 =1/3*3pih^2dh/dt

                                          put the value of dh/dt =?????????

Catalogs Discussion Forums -> Integral Calculus -> integral of 500xcube -> Go to message
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  500x^4/4=125x^4

 

Catalogs Discussion Forums -> Optics -> light travels in two media A and B wiyh speeds 1.8 *10^8 m/s and 2.4 *10^8 m/s respectively. then -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 critical angle should be 

Catalogs Discussion Forums -> Optics -> light travels in two media A and B wiyh speeds 1.8 *10^8 m/s and 2.4 *10^8 m/s respectively. then -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 R.I. of the medium is  equal to speed of the light in vacuum /speed of light in medium

                                =3*10^8/1.8*10^8=1.6

                              =3*10^8/2.4*10^8=1.25

              hence   

               critical angle when light passing through  to  

                                                  sin  *= 

Catalogs Discussion Forums -> Optics -> To what volume must 50 ml of 3.5M H2so4(sulphuric acid) be diluted in order to make 2M h2so4(sulphur -> Go to message
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correction 

 no. of mole should be equal .

Catalogs Discussion Forums -> Optics -> To what volume must 50 ml of 3.5M H2so4(sulphuric acid) be diluted in order to make 2M h2so4(sulphur -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 no. should be equal so ,

                     50 *3.5=v in ml *2

                          v=87.5 ml ans.

 

Catalogs Discussion Forums -> Optics -> what is intencity of light -> Go to message
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 intencity of light 

=power per unit area carried by the light 

Catalogs Discussion Forums -> Optics -> medium -> Go to message
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Catalogs Discussion Forums -> Differential Calculus -> function(range) -> Go to message
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 [0,1]

 

Catalogs Discussion Forums -> Differential Calculus -> please clarify my doubts .................. -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

 if

y=ex

then dy/dx is e.1

and if y=

then dy/dx=.ln(e)

                    =

Catalogs Discussion Forums -> Differential Calculus -> differential calculus -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 you have given 

sinx=cosx

then tanx =1

Catalogs Discussion Forums -> Organic Chemistry -> what is ionic radius? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 the radius of an ion is called ionic radius

or

the distance of the outermost shell containing electron/s

 
 
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