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A thin unifor rod is suspended in vertical plane as a physical pendulum about point A.The time period of oscillation is T0.Not counting the point A,the number N of other points of suspension on rod such that the time period o ...

Please show the dehydration products: 1. *Image* ...

Q:=> *Image* The tube contains 10 cm of air column and 4 cm of mercury column each with 4 cm of water column between them as shown above. Now the tube is made vertical. Now find the the length of air column/water column? Q ...

*Image* i have solved this problem and got same answer as given but in intermediate steps my approach was different: i took Pbottom of drop=Ptop of drop+pgh in book they took Ptop=Pbottom of drop+pgh which is correct??? ...

Ques 1) A solid Copper cube of edge 1 cm is suspended in an evacuated enclosure. It's temperature is found to fall from 100 ° C to 99 ° C in 100 sec. Another solid copper cube of edge 2 cm with similar manner. The time requ ...

A nice problem ;) (who am i to rate ? :P) If u choose 5 distinct real numbers there must exist some a and b for which the following inequality is valid |ab+1| > |a-b| Prove it!! source : ISI workbook ...

wen to and wen not to take self energy... eg: a sphere of mass 2m is broken into two spheres of mass m each and kept dist d apart... also does it mattter whether d original sphere was broken inti a sphere and a cube of mass m ...

today my sir took a lecture on quantum mechanics , and he told us an amazing thing , which i would like to share with the young enthusiastic brains here The particle theory of light failed to explain the phenomenon like diffr ...

if 2 identical point charges , dist d apart, are kept. then how do they know to get away from each other??? i mean .... plz explain wid d help of field lines... ...

hey guys did you get the confirmation of your forms, ? i am getting the message dat form is received but it isnt still apearing in comfirmation page. Any one here who is in the same situation? ...

*Image* A rod (red) is just release from the position shown here.. Where will the rod finally rest? (to the right, to the left) Why? Clarifications: No friction.. Red part is the rod Vertical Black line is a string Blue top i ...

A poor farmer went to a market to sell some pea and lentil, however as he had only one sack and didn't want to mix peas and lentils, he poured in the sack the peas at first, bound the sack up and than poured in the lentils. A ...

Which of the following resonating structures of 1-methoxy-1,3-butadiene is least stable?? http://img861.imageshack.us/i/14920168.png/ ...

There are 5 pairs of shoes in a cupboard from which 4 shoes are picked at random. The probability that there is atleast one pair is: (a) 8/21 (b) 11/21 (c) 12/21 (d) 13/21 Please explain if you know the solution... Thank you! ...

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Let f(x) , x greater than equal to 0 , be a non negative continuous funcn , and let F(x) = 0∫x f(t) dt , x greater than equal to 0. If for some c >0 , f(x) is less than equal to c F(x) for all x greater than equal to 0, ...

If z is a complex number such that arg( z-2/z+2 ),then the value of !z-2i!,(! . ! means modulus. ...

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Two doubts: Why does methylation of toluene in the presence of anh. AlCl3 give m-xyelene as opposed to p- or o- product? When 2 Bromo 1 Methyl cyclohexane is treated with CH3ONa in methanol solvent, does the reaction proceed ...

In the arrangement shown wavelength of light used is \lambda . The distance b/w slits S1 and S2 is d ( <<D) . The distance b/w S3 and S4 is u = \lambda D / 3d . If the ratio of max to min intensity observed on screen is ...

*Image* ABC is a an acute-angled trianlge in which LB = 2LC and AD is the internal bisector of A which meets BC at D such that, CD = AB prove that, LA = 72° An interesting problem no doubt but an easy one though..!! Its from ...

The value of C1+2C2cos@+3C3cos2@+4C4cos3@+.................................+nCncos[(n-1)@] ...

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What exactly an angle is[1]....since it is dimensionless we know its value should remain same in all units!...so certainly we cant say it is dimensionless.If not dimensionless then what it is??.... say cheese ...

A scarlet compound A is treated with conc. HNO3 to give a chocolate brown ppt. B . the ppt. is filtered and the filtrate is neutralized with NaOH . Addition of KI to the resulting soln. gives a yellow ppt. C . The brown ppt. ...

please help--solubility of amines C6H5NH2, EtNH2, [Et]2NH soure-cbse paper 2011 acc to me, it shud be 1<3<2 not sure though,,please help ...

Q) f(x) = (x+1)(x+2)(x+3)(x+4)+5 , where x belongs to [-6,6]. If the range of d function is [a,b] , where a,b belongs to N. Find the value of a+b ? Q) f(x) = x^135+x^125 - x^115 +x^5 +1 r(x) = x^3 - x when f(x) / r(x) , then ...

If equation xn - nxn-1 + a2xn-2 + a3xn-3 + ......an-1x + (-1)n = 0 has n positive roots, then least value of n for which a2 + a3 is negative, is ? ...

1. \lim_{\theta \rightarrow \frac{\pi}{4}} \frac{\sqrt{2}-cos\theta -sin\theta}{(4\theta-\pi)^{2}} 2. \lim_{x\rightarrow 0}\frac{xtan2x-2xtanx}{(1-cos2x)^{2}} 3. \lim_{x\rightarrow 0}\frac{e^{x}-e^{xcosx}}{(x+sinx)} I want to ...

In shooting competition a man can score 0,2,3,4 or 5 points.Find the number of ways he can score 30 points in 7 shots. ...