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we have a uniformly charged hollow solid hemisphere . A is the centre of the circle which is formed by the edge of the hemisphere. (the radius of the circle is therefore R --- R being radius of the hemisphere) B is a point at ...

Names for our proposed magazine are invited. If we select the name suggested by you, you will be given 1 yr free subscription :) The things to keep in mind 1) Caters to P C M 2) Focusses on IIT JEE with some attention on CBSE ...

Board questions..(so pls i need detailed answers.. we cant use graphs in boards for explanations) 1. If f(x) = e1/x, x≠0. and 1 if x=0. Find whether f is contiuous at x=0. 2. f(x) = (x-1) tan Πx/2, if x≠1 and k if x=1. F ...

draw {x}={x+x2} A not so good looking graph? ...

if 1>=a>=b>=c>=0 & λ is a real root of the equation x3+ax2+bx+c =0 then max. value of modulus λ is ? a)1 b)1.5 c)2 d)0.5 ...

,,pl gimme some ideas 2 remember..or learn dem..yaar...dey form the most of jee chem and im never getting dem rite [17] sum1 pl help...tz gettin late ...

xy = 1 ...

*Image* in the given circuit each cell has a internal resistance of 1 ohms. find out the potential difference across the 2 V cell ...

y={tanx} ...

(\left\{ y \right\}-1/2)^2=4\left\{x \right\} ...

IIT-JEE CHEMISTRY Q.1 Reactions of aluminium with 1. O2 2. N2 3. Cl2 4. Cr2O3 5. Mn3O4 6. HCl 7. H2SO4(Dil.) 8. H2SO4 (Conc.) 9. HNO3 10. NaOH 11. AlCl3 Q.2 Reactions of Al(OH)3 with 1. Acid 2. NaOH 3. Heating Below 450ºC 4. ...

3PCl5 in solid state xists as [PCl4]+[PCl6]- how does ICl3 Exit in solid form as...???? ...

a glass window is to be fit in an aluminium frame . the temperature on the working day is 400C and the glass window measures exactly 20 cm X 30 cm . What should be the size of the aluminium frame so that there is no stress on ...

*Image* find the aswers.. reat the questions as 1,2,3 respectively.. ...

1)Is Hg-Sb bond a polar or a non-polar?.Explain your answer. 2)Which of the two molecules, OCS and CS2 has higher dipole moment and why? 3)The species that do not contain peroxide ions are: (a)PbO2 (b)H2O2 (c)MnO2 (d)BaO2 (Ex ...

assume a big solid sphere wich encompasses the orbitl of the moon round da earth and the moon moves oer a sphere .is da moon slidin or rolling?given dat the time takn for the moon to orbit the earth is 30 days and the tim ...

sir can u send me somthing about Strucural isomrs and its Calculation ...

Sam as pratek i also seeks notes on Elctricity-basics only I hav jus given a thought to it ...

though projctile is believd to be easiest topic by such stage of time Sir Can I get some idas on deling with projctile sums ...

When we calculate the min velocity at the bottom a body can have while moving in vertical circle attached to a string of length r we calculate the min value of vel for which T=0 and get v= 5gr but when we calculate the same f ...

Given a,b,c>0, find all real solutions to the equation: \sqrt{a+bx} + \sqrt{b+cx} + \sqrt {c+ax} = \sqrt{b-ax} + \sqrt{c-bx} + \sqrt{a-cx} ...

This is a very standard question If I can dare to put it that way. Edit: sorry used alcohol instead of aldehyde :(( What do we do if we have to reduce only the ketone group in a compound that contains both ketone and aldehyde ...

can i use the following for cbse math exam? 1.Binomial Expansion of fractional and negative powers for evaluating limits 2.L'Hospital Rule 3.Gamma Functions for calculating area 4.Euler substittutions ...

The word "queue" is the only word in the English language that is still pronounced the same way when the last four letters are removed. Beetles taste like apples, wasps like pine nuts, and worms like fried bacon. Of all the w ...

which publisher's mock test should i buy for last minute preparation for jee 2009.. ...

1 ) If each element of a second order determinant is either zero or one,what is the probability that the value of the determinant is positive? (Assume that the individual entries of the determinant are chosen independently,ea ...

f(x)=[x] ,x≥0 f(x)=K+[x] ,x<0, {[.] is the greatest integer function......} is continuous at x=0, and one root of ax^{2} +bx+c=0 exceeds the other by K,....then b^2-4ac =? a) a b)b c)a^2 d)b^2 ...

A meter scale made of stell is calibrated at 20°C to give correct reading. Find the distance between 50 cm mark and 51 cm mark if the scale us used at 10°C. Coefficient of linear expansion of stell is 1.1 X 10 -5 /°C. Ans. ...

a railway track (made of iron) is laid in winter when the average temperature is 180C . The track consists of sections of 12.0m placed one after the other . how much gep should be left between two such sections so that there ...

there are 4 concentric shells A,B,C,D, OFradii a,2a,3a,4a resp. shells B & D are given charges +q & -q resp. shell C is now earthed .the potential diff. VA-VC ...