Recently Active Questions

*Image* ...

*Image* ...

A disc of mass m ,radius R is shown rolling on horz surface(having sufficient friction). Variation of electric fields with direction exist along its path as shown in figure *Image* 1.Find the velocity after very long time. 2. ...

if x+1/x=12 then x-1/x=? ...

prove that product of evert three consecutive integers is always divisible by 3 as well as 2.... plzz help.. ...

What is the difference between a base and a neucleophile? ...

A balloon in the form of a right circular cone is surmounted by a hemisphere, having a diameter equal to the height of the cone., is being inflated. how fast is its volume changing with respect to its total height h, when h=9 ...

*Image* ...

*Image* ...

*Image* ...

1.if tanx + tan(x+π/3) +tan(x+2π/3)=3 prove , 3tanx - tan3x/1 - 3tan2x =1 2.if α,β are two different values of θ when α≠β,where 0< α,β <2π which satisfy the equation 6cosθ + 8sinθ =9 find the value of sin( ...

Which is a soluble base in water? a. Fe(OH)3 b. Cu(OH)2 c. Zn(OH)2 d. NaOH ...

If a merchant estimates his profits as 20 % of the selling price, what is his profit percent? Show the process. ...

Please provide solution ...

A small ball is suspended over an infinite horizontal conducting plane by means of an insulating string of stiffness k. As soon as the ball is charged it descends by x and the separation from the plane becomes l. Find the cha ...

In the circuit shown, calculate: a. p.d. between B and D b. current in the galvanometer c. effective resistance across the points A and C *Image* ...

tan 8θ - tan 6θ - tan 2θ =tan8θtan6θtan2θ ...

*Image* ...

*Image* ...

Find the locus of the centroid of an equilateral triangle inscribed in the ellipse x2/a2 + y2/b2 =1 (Ans is (a2+3b2)x2/a2 + (3a2+b2)y2/b2 =(a2-b2)2...please give the entire working) ...

*Image* ...

If current I passes through resistance r in time t , the amt of heat energy produced = I2rt My question is that why is this I2 and not I? ...

*Image* ...

If current I passes through resistance r in time t , the amt of heat energy produced = I2rt My question is that why is this I2 and not I? ...

*Image* ...

PLease give the solutions and pl don't use equivalent concept as these questions are for school. ...

Why is the emf lesser than the terminal voltage when the cell is charged by passing current through it? ...

A motivation screensaver for all IIT aspirants. Download here: http://bit.ly/10JyrMM Enjoy! :) ...

What is the remainder when 7187 is divided by 800? ...

A hemisphere network of radius a is made by using a conducting wire of resistance per unit length r. Find the equivalent resistance across OP. *Image* ...