Recently Active Miscellaneous Questions

Find the eqn. of line which is at unit distance from point (2,1) and it also passes through (2,3) ...

*Image* The system above in the diagram iis released. The mass of the black beads is m, while that of blue loop is M What is teh minimum m/M ratio needed for the lower loop to take off from the ground.. (A variation of this q ...

I changed the links yesterday to open on a new page for each click.... What is your feedback? do you think this is unnecessary? I will revert back to the original thing if most of you find it useless.... ...

Two small particles of equal mass start moving in oppsotite directionds from a point A in a horizontal circular orbit. Their tangential velocities are v adn 2v respectively, as shown in the figure. Between collisions, the par ...

If the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can suresly say that A) linear momentum of the system does not change in time B) Kinetic energy of the syst ...

My niece is in 10th this year and wants to go for IIT coaching. Since I am based in A.P., a coaching centre in this state would be preferable though my mind is not completely closed on a centre outside if it is vry good. Amon ...

Find the minimum value of a^2+b^2 given that x^4+ax^3+bx^2+ax+1=0 has only real roots... (The question is not very very difficult question.. if you recall the trick often used in solving 4th degree polynomials...) ...

The quantum numbers +1/2 and -1/2 for the electron spin represent A. rotation of the e in clockwise and anti-clockwise direction respectively. B. rotation of the e spin in anticlockwise & clockwise dir respectively. C. magnet ...

Solve for real values of x \left( \int_{0}^{1}\frac{1}{t^{2}+2t\cos a+1}dt\right)x^2+\left(\int_{-3}^{3}\frac{t^{2}\sin 2t}{t^{2}+1}dt \right)x+2=0 Saw this on another forum... not very tough... only looks dirty... ...

Similar to qeustion posted here http://www.targetiit.com/iit-jee-forum/posts/simple-puzzle-11129.html by Nishant sir Q *Image* I dont want u to calculate no. of triangles..instead derive a general formula for it[1] ...

Find the minimum velocity required to send the ball to the top of this infinite structure.... Keep in mind: The successive radius are half of the original ones..... there are infintely many such. The lowest loop has radius R, ...

These days there seem to be a lot of inequalities being discussed here... This one is much simpler... If a, b, c are positive, Prove that : \frac{b^2+c^2}{b+c}+\frac{a^2+c^2}{a+c}+\frac{a^2+b^2}{a+b}\geq a+b+c I hope think on ...

A charged particle of mass m, charge q is in an electric field given by E=E_x\sin(\alpha t)\hat{i}+E_y\sin(\beta t)\hat{j} Find the equation of the position of the charge as a function of time ...

Part 1 *Image* here the radius side of the successive square is half of the original one... (The whole thing goes to infinity) Side of the Largest square is 1. Part 2 *Image* Find the CM of this system... Here you successivel ...

Where is the center of gravity of a very long pole of length L placed vertically on the earths' surface.... (If you think that the answer is obvious.. Think again :P) ...

I dont know if this can be solved.. (I havent so far..) but this question just stuck me when i was seeing another one.. On a solid sphere of radius R, or resistivity σ, there are two points a, b on the equatorial line at a d ...

This one is another of those which are very common olympiad type.. but i think are very important for jee aspirants too... if there are 7 distinct real numbers, show that there will be atleast 2 of them say x,y are such that ...

This is a classical question of magnetic flux... *Image* The bluish part is a metalic conductor which is moving with a velocity v There is a magnetic field in the dotted circular region... will there be the current in the loo ...

Q.1 ) FIND THE VALUE OF DETERMINANT : 265 240 219 240 225 198 219 198 181 Q.2) A thin lens is made with a material of refractive index 1.5 with both sides convex is dipped in water ( R.I.=1.33) , then how will it behave ? Q.3 ...

In which case the wavelength emitted is maximum? ...

Two men start to travel along the equator from the same point at the same time in the same direction with velocities of R/1000 m/s and 2R/1000 m/s respectively. If R is the radius of the earth along the equatoral plane, Find ...

This is a very old problem... Prove that 4n+n4 is a composite number... ...

Your friend has two children. You meet one of them and find out that he is a boy. What is the probability that the other child is a girl? P.S. - A child can only be a boy or girl ...

hey cud u pls tel me abt d thrsday n friday clases. ...

This is to everyone... The latex engine we were using was from codecox... somehow their site has recently become very unstalbe and is down most of the time.. We are trying to look at good alternatives and will get this proble ...

Which of the following orbitals is not symmetrical about Z-axis? ...

Which of the following do exist? ...

Q Find the intersections of {y}=cos|x| and [y]=sin2x from (0,∩) ...

Guys plz send ur cooments abt osama.... he was very inspiring n gave me sum good tipz...:( :) ...

please explain... how both bodies eject heat and in explanation it is given E=σt2....how is it true? ...