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if a box of walled at 4 sides with heavy weight whre will be its centre of gravity? where will be the centre of gravity of an irregular object? its a stupid question does there is centre of gravity in space? why the magnetic ...

and for near the fuel tank of the plane? does the centre of gravity is there in ? we see that planes take off at an angle does it relates with its mass? ...

what can be the wavelenght of lasers that are used in operations? ...

what will be the fbd for a jumbo jet which is going to take off and in flying state? why the centre of gravity of a nascar car is kept near the ground? does it inrease the friction? ...

suppose there are two objects in space will they will follow the newtons law of motion? if yes then if a two body of equal masses one is at rest nd another moving in a isolated system both strikes the rest one moves with the ...

Prove that the sum of the infinite series 1+1-1+1-1+... is either 1 or 0. <edited:> the sum can be 1/2 too.. in fact, the sum is formally defined to be 1/2. So...go ahead and prove it! ...

*Image* a frictionless nd a massless pulley shown in the fig. the blocks are realeased from rest. after 1sec from the start , the block of mass 4kg is stopped momenterily. find the time which string becomes the tight again ...

Figure out integral solutions of x3-y2=2 ...

The number of cubic polynomials p(x) with integral co-efficients such that for three distinct integers a, b and c such that p(a)=b, p(b)=c and p(c)=a is (a) 0 (b) 1 (c) dependent on a, b, c (d) infinite ...

Mr X of mass 80 kg enters a lift and selects the floor he wants. The lift now acc upward at 2 m/s2 for 2 sec and then moves with const velocity. As a lift approaches his floor, it decelerates at the same rateas it is previous ...

This is a simple standard question... (Which I would rate as a must know for most beginners) A disc of uniform surface charge density σ and radius r is rotated about its center, find the magnetic field induced at the center ...

The following is a system of quadratic equation with a,b,c being real and a≠0..... ax12+bx1+c=x2 ax22+bx2+c=x3 ax32+bx3+c=x4 ax42+bx4+c=x5 . . . . . . . . axn-12+bxn-1+c=xn axn2+bxn+c=x1 Answer the following questions.... Q ...

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This is a simple one... if you dont get scared Prove that 1/1 + 1/2 + 1/3+ 1/4..... this sum is not finite.. (as n goes to infinity) ...

A Ring of radius 'r' and has a charge of 'q' distributed uniformly over it's length . a small portion 'x' is cut of from the ring where x<<r . Find the Electric field due to the remaining portion at the center of the ri ...

1)f(xy)=f(x)+f(y) implies f(x)=klnx or f(x)=0 2)f(xy)=f(x).f(y) implies f(x)=x^n 3)f(x+y)=f(x).f(y) implies f(x)=a^kx 4)f(x+y)=f(x)=(fy) implies f(x)=k where k is a constant and 5)f(x).f(1/x)=f(x)+f(1/x) implies f(x)=±x^n +1 ...

This is a link to an online interview that i gave today This important thing is mazaak mat udana ;) Abhee interview dene me expert hona hai :D [url=http://microreviews.org/targetiit/]Interview..[/url] ...

Find number of roots of 2x=(2n+1)Ï€(1-cosx) where n is positive integer ...

1) SHow that the roots of the eqn x4+4x3-8x2+k=0 are real for k belonging to [0,3]. 2) Show that the eqn log(x2+2ax) = log(8x-6a-3) have only one solution for a=1 or a belonging to [-1/2 , -3/22]. ...

Dis is a real emergency(simple one though).....plz helpp.... when a gas filled balloon rises up, it gains both kinetic energy and potential energy.....how does the principle of conservation of energy apply in this case??Expla ...

The number of nodes in 3d orbital is ...

Q1 Which of the following quantum numbers are permitted? a) ) n=3, l=3, m=2, s=1/2 b) n=4, l=0, m=1, s=1/2 c) ) n=3, l=1, m=-2, s=-1/2 d) n=2, l=1, m=1, s=-1/2 Your Answer: (c) Correct Answer: (d) Score: -1 Explaination : l s ...

This was posted in another iitian forum (by one of our members :D). Its a nice problem so I flicked it. Let f(x) = ax2+bx+c be such that the equation f(x) = x has non-real roots. Prove that this implies that the equation f(f( ...

TWO CARS A AND B ARE TRAVELLING IN THE SAME DIRECTION WITH VELOCITIES V1 AND V2 ( V1 > V2 ) WHEN THE CAR A IS AT A DISTANCE AHEAD OF THE CAR CAR B . THE DRIVER OF THE CAR A APPLIED THE BREAKSPRODUCING A UNIFORM RETARDATIO ...

The strength of bonds formed by 2s-2s, 2p-2p and 2p-2s overlap has the order ...

Q1 tell me if these named reactions in syllabus or not ?? a) Dieckman Reaction b) Malonic ester synthesis c) Acetoacetic ester synthesis Q2 also tell me what happens when ketones are treated with RONa/heat where R is alkyl gr ...

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which carbocation wont for m intermediate? *Image* ...

*Image* i am getting some answer bt i need confirmation..post ur method +answer .. ...

find coordinates of point on parabola y2=8x which is at min distance from circle x2+(y+6)2=1 is differentiation the only method ?? can we get answer by observation only ?? ...