Recently Active Questions

Find the set of values of c for which the angle between the vectors cxi-6j+3k and xi-2j+2cxk is acute for every xξR ...

This is a very very very very old and well known thing of higher mathematics... Though I am giving you a very simple part or the simple part of that thoery... A line is of length 1. 1/3rd of the segment is removed from the mi ...

*Image* THe answer is not as obvious as you think ...

In presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti markonikov's addition because: options are as: *Image* ...

For n belonging to N, find the value of the definite integral \int_{0}^{n\Pi +V}{\sqrt{(1+cos2x)/2}dx} where \Pi /2<V<\Pi ...

A circular ring of mass M and radius a is placed in a gravity free space. A small particle of mass m is placed on the axis of the ring at a distance √3a from the centre of the ring is released from rest. the velocity of the ...

Please visit the following links to see CBSE BOARD 2009 solutions for Chemistry code 56/1 and Physics code 55/3 papers. http://topperlearning.com/userfiles/XII_chem_board_2009_solutions_.pdf http://topperlearning.com/userfile ...

WHat is the moment of inertia of a cuboid over 1.any particular edge 2.any body diagonal 3.COM no need for derivations,the expressions will do ...

Q If 1,logyx,logzy,-15logxz are in A.Pthen (a)z3=x (b)z3=y-2 (c)z-2=y (d)none of these ...

According to Newton's Third Law "Every action has an equal and opposite reaction". The question is: A block of mass m is kept on a horizontal table. What is the "reaction" to the force mg experienced by the block? Options are ...

hey frends...can sum1 plz explain..wht happnens wen OH ion is added to buffer...how does buffer absorb it..plz explain in details... ...

two incident monochromatic waves whose wavelength differ by a small amt dλ are separated angularly atθ and θ+dθ wrt the incidence ray .the dispersive power is given by (a)dθ/dλ (b)dθ/θ (c)dλ/λ (d)λ(dλ/dθ) ...

the great way for life ...

1)find the value of\sum_{r=1}^{k}{(-3)^{r-1}}}3n_{C}_{2r-1} where k=3n/2 and n is an even positive integer. ...

a particle is approaching with a velocity of 5i^+3j^ and it returns after colliding with a velocity of -3i^+4j^ find the coefficient of restitution ...

a given sample of N2O4 in a closed vessel shows 20% dissociation in NO2 at 300K and 1atm,find its heat of dissociation ...

The square of a 8*8 chessboard are randomly painted either red or black,what is the probability that a randomly chosen 2*2 square contains 2 black and 2 red squares? ...

*Image* and *Image* ...

1.) a hydrogen atom in an excited state emits a photon which has the longest wavelength of the paschen series. further emissions from the atom cannot include the a) longest wavelength of the lyman series b) 2nd-longest wavele ...

Let A = \left\{1,2,3 ... 10 \right\} and B = \left\{1,2,3 ... 20 \right\} A function is chosen randomly from A to B,what is the probability that it is non decreasing? ...

a block of mass m is placed on a smooth wedge of inclination theta The whole system is accelerated horizontally so that the block does not slip on the wedge The force exerted by the wedge on the block has a manitude is the an ...

*Image* none of my answers seem to match with the options given :( ...

\frac{(x-1)^{2}}{x} = -1 and p = \frac{x^{16000}+1}{x^{8000}} , find p ...

can anyone post the graph of resistance vs temp. of a semiconductor ...

there is ball file with water.then centre of mass in centre of sphere we make hole in it . then does it centre mass must change as water come out at last centre of mass is in centre again how? ...

happy birthday ! ...

A hollow cylinder of mass m1, filled with water of mass m2, is pure rolling on a sufficiently rough surface with a speed v. What is the total kinetic energy possessed by the cylinder+water system? Options: (a) 0.5*(m1+m2)*v2 ...

*Image* Black stands for black's pieces, the other colour is for white. P stands for pawn. All other notations are standard. Its black's turn to play. Tell me how black can win in 3 moves. This puzzle is pretty nice, in that ...

the rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical suuroundings are the same if a)The masses of the liquids are equalb)equal masses of the liquids at same teperatures are t ...

if x2 -xcos(A+B)+1 is a factor of the expression 2x4+4x3sinAsinB-x2( cos 2A+cos 2B)+4xcosAcosB-2 Then find the other factor. ...