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*Image* Suppose a railroad car of mass M is present. (in the picture it's the box) . A pendulum (length of string=l) is held at rest at an angle alpha with the vertical. The bob of the pendulum has a mass m. Find the velocity ...

anyone who can suggest a site from which CBSE 12 computer science question papers can be downloaded? ...

In Sl no 17 in AIEEE form where we are asked for the course we are applying for,the numbering given in the circles are as follows: BE/Btech only - 5 B.arch/Planning only - 6 both BE/Btech and B.arch/Planning together - 7. But ...

I just came across a statement : If |f(x)+g(x)| = |f(x)| + |g(x)| then f(x).g(x) ≥ 0 What does this mean ? ...

Solve for positive reals (x,y,z) z^2+2xyz=1 3x^2y^2+3y^2x=1+x^3y^4 z+zy^4+4y^3=4y+6y^2z It's been a while no -one has really given any elaborate soln for this..... ...

1 ) if iiiiii...∞ = a+ib prove that tan 1/2 pi a = b/a and a2+b2=e-pib... 2) if z1 and z1 are the roots of the equation αz2+βz+γ=0 prove that |z1|+|z2| = 1/|α|[ |-β+√αγ|+|-β-√αγ|] ...

Q. If m=np and p+q=1, then \lim_{n\rightarrow \infty } \; ^{n}C_{r}q^{n-r}p^{r} is equal to (a) e-mmr/r! (b) e-m(m/1)*(m/2)*...(m/r)*(1/r+1) (c) (m/1)(m/2)...(m/r)(1/em) (d) e-mmr/(r+1)! ...

Ques 1) If 0 ≤ x ≤ 3 π , 0 ≤ y ≤ 3 π and cosx . siny = 1 , then the possible number of ordered pairs (x,y) is:- (a) 4 (b) 8 (c) 6 (d) 12 Ques 2) The no. of points inside or on the circle x2 + y2 = 4 satisfying tan 4 ...

Is it that I'm missing it....or are the results of rmo-09 in west-bengal not really out yet? WB-people requested to respond pls! ...

Find the sum upto infinite terms giving atleast (bcz i know 2) 2 different methods S = 1+2^2x+3^2x^2+4^2x^3+.... ...

let an be a sequence defined on positive integers by setting a_{n}=\frac{4n+\sqrt{4n^{2}-1}}{\sqrt{2n+1}+\sqrt{2n-1}} then find the value of a_{1}+a_{2}+a_{3}+a_{4}+..............a_{60} ...

Q1. For what values of d is the product of two numbers of the form x2-dy2 and u2-dv2 is also of the same form (d is not a perfect square) Q2. How many solutions does the equation xax = axa, 0<a<1 have in positive real n ...

lets put forward our doubts and knowledge on "optical isomerism " in this thread.....that will be a great move ....i feel !!!! ...

i have started this thread to get solutions for the problems that i cant solve in any chapters.So pls dont make fun of the pbms if i asked foolish qns,and pls solve these pbms and give their full solns or hints.i will be very ...

i wonder y i never asked it before.....its my age old doubt.......but now i am going to prove sumthing......... WHAT??? that neone who says that any vector has zero magnitude component in a direction perpendicular to it is ho ...

1) if two regular hexagons are inscribed in a circle of unit radius.....the min area common to the hexagons is ??? 2)if a triangle is inscribed in a rectangular hyperbola then which one of the following is on the curve a) cen ...

A point charge q moves from point P to point S along the path PQRS in a uniform field E pointing parallel to the positive direction of the X-axis.The coordinates of the point P,Q,R and S are (a,b,0),(2a,0,0),(a,-b,0) and (0,0 ...

*Image* Find R so that load voltage remains 18 volts as input voltage is free to vary from 22 V to 28 V.Zener diode shown can maintain a constant voltage of 18 V for I between 2mA and 200mA.Rl(load resistance) is 18ohm ...

Maybe these are too tough , maybe very easy , but I would definitely appreciate a good solution of these problems ---- Find 1 > The gravitational field on a point mass due to an infinitely unstreachable thread of density p ...

→if four points on the curve 2x4+7x3+3x-5 are colinear then find the A.M of the x coordinate of the four numbers? 1>-7/8 2>7/8 3>3/4 4>-3/4 ...

A heavy load of mass m is suspended by a light spring of spring constant k. The spring is slowly pulled down at the mid-point(a certain work A is done thereby) and then released. Find: I)The maximum kinetic energy of the load ...

Solve for reals (x,y) 2^{y-x}(x+y)=1 (x+y)^{x-y}=2 ...

Acidified K2Cr2O7will fail to distinguish between A)CO and CO2 B)C2O42- and CO3- C)CO and SO2 D)C2O42- and F- Please state why ...

The ionization energy of the coinage metals fall in the order Cu<Ag>Au .Why ? ...

1.A water tank filled with water stands on a horizontal table top.The level of water is at a height H from the bottom of the tank.The tank together with the water weighs W.The side of the water tank has at the bottom a plugge ...

Three small bodies with mass ratio 3:4:5(mass of the lightest body being m) are kept at three different points on the inner surface of a smooth hemispherical cup of radius r .The cup is fixed at its lowest point on a horizont ...

They might be simple, But mujhse accurately kabhi nahi hote...in search fr a strategic approach. Find the number of ordered pairs (x,y) (Both x, y are integers) Satisfying- Q1) 2x2 -3xy -2y2 =7 Q2) y- lx2-2xl +1/2 >0 & y+ ...

A piece of straight conducting wire 1m long is held horizontally at a height pointing east to west.Then the wire is let fall freely.Find the difference of potential between the ends of the wire after 1 second.Horizontal compo ...

Is there anybody here who knows hacking and can teach me for free how to hack Yahoo Gmail Hot mail anything with a software or in any way. ...

An empty pressure cooker (Volume=10 lts) contains air at atm. pressure 105 Pa at a Temp. of 270C. It contains a whistle with area 0.1cm2 & mass=100gm. What should be the Temperature of air inside so tht the whistle is just li ...