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i have created a test paper but some of its answers need to be changed how can it be done? please answer quickly!! ...

*Image* two rats A and B having initial positions at A and B at t=0. Rat A start chasing rat B with constt speed u. at the same time rat B start running in +ve x-axis with same speed. Find te mini distance btw them. ...

If atanθ+bcot2θ=c acotθ-btan2θ=c,Eliminate θ ...

In the diagram below, The ball hits the billiards table and returns back in the same direction. If the angle of hitting the wall is θ from the vertical. Find the minimum coefficient of friction between the wall and the ball. ...

prove that for +ve values of x x2 > (1+x)[log(1+x)]2 ...

find x ( 3/5)x+ (4/5)x=1 ...

A thin uniform rod of mass m has one end attached to a smooth hinge and is allowed to fall down from a horizontal position.Find the max. horizontal strain on the hinge during rotation of rod. ...

Plot the graph of [y]= e[x] ...

Determine molar solublity of AgSO4 in 0.25M Na2SO4 solution and determine the factor by which soolublity decreases when it is compared to solublity in pure water.Ksp=1.4*10-5 at 25°C ...

a block of mass m is placed on a rough inclined plane which makes an angle @ with the horizontal..if the incline plane is placed in an elevator moving up with a uniform vel v and the block does not move,find the work done by ...

hw many grm moles of HCl will b required to prepare one litre of buffer solution (conatinin NaCN and HCl) of PH 8,5 usin .01 grm formula weight of NaCN ? Kdisso (HCN)=4.1*10^(-10) here is am method rite ph=pka+log ...

CH2—CH—CH2—COOCH3 CN OCH3 plz tell me fast ...

*Image* The spring block system lies on a smooth horizontal surface. The free end of the spring is being pulled towards the right with constant speed v0 = 2m/s.The spring constant is 100 N/m. At t=0, the spring is uns ...

could anyone please suggest me good coaching classes and college if I want to clear IIT entrance exam.I am presently in 10th standard,SSC board.I stay in Mumbai.If anyone could tell me about good college and coaching class in ...

If θ and α are two real numbers such that ( cos4 θ/cos2 α) + (sin4 θ/sin2α) = 1 then prove that: - (cos2n+2 θ/cos2nα) + (sin2n+2θ/sin2nα) = 1 for integral values of n. ...

Find a 3 digit number whose digits are in A.P. and if 400 is added to it, then its digits are in G.P. ...

This is a very famous problem of Mathematics (Not very much in IIT Syllabus though! but a very very interesting question of Limits!) A man Starts from his home to office. When he reaches half way he starts to go back to his h ...

1.) the nodal plane in the pi bond of ethane is located in a) the molecular plane b) a plane perpendicular to the mol plane wich bisects the C-C σ-bond at right angle c) a plane parallel to mol plane d) a plane perpendicular ...

If ax+by+c=0 is the polar of (1,1) w.r.t the circle x2+y2-2x+2y+1=0 and H.C.F of a,b.c is equal to one then a2+b2+c2= ? ...

Find the range of f(x)=ln(1+x2/1+x+x2). is the ans [ln(2/3),ln(2)] ? ...

∫1/(sin^2x+sinx+1) itz sin square x +sinx+1 tryin cinc couple o dayz wa cod b substitn >>>>>>>> ...

Find the work done in pulling the ball from the situation shown in the figure to the topmost point of the wedge. The wedge is immovable. At the top there is a small pulley kind of a thing.. we dont have to worry about that. T ...

let f(x) be a polynomial with integral co - efficients such that f(m) = f(n) = f(o) = f(p) = 2008 where m ≠n ≠o ≠p prove that there will exist no integer k such that f(k)=2010 ...

find the equation of tangents drawn to the curve y2 - 2x3 -4y + 8 from the point (1,2) ???? ...

graph of e^(1/sinx)..... ...

250ml of a sol. contains 2.65 grams of Na2CO3. 10ml of this sol. is added to "x" ml of water to obtain 0.001M Na2CO3 SOL. What is the value of"x" in ml ?? ...

*Image* In cannizaro reaction , why electron withdrawing nature of R group accelerates and electron donating nature slows down the reaction ??????? ...

*Image* In the figure there is a four way key at the middle . if key is thrown from situation BD ton AD , then how much charge will flow through point O ???? ...

exact value of cos 20° + 2 sin2 55° - 2 sin65°. ...

1. find the value of cos 6° + sin 24° 2. fine the value of cos2 3π/5 + cos2 4π/5 ...