Recently Active Questions

The points (1,1),(3,1),(3,3)and (1,3) form a rectangle but the answer is- square of side2. ...

If 20 Joules of work is done in compressing a spring from 0 cm to 6 cm then find the work done in compressing the same from 3 cm to 6 cm. ...

pKb of NH3 is 4.74. The pH when 100ml of 0.01 M NH3 solution is 50% neutralised by 0.01 M HCL is plzz explain ...

pKa1, pKa2 and pKa3 of H3PO4 are x,y,z respectively . pH 0.1 M Na2HPO4 solution is ...

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What will be the angle of deviation produced by two mirrors when they are placed 1. parallel to each other 2. perpendicular to each other 3. at an angle of 45° to each other ...

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When a certain metal was irradiated with light of frequency 3.2 x 1016 Hz. Photoelectrons emitted had twice the kinetic energy as did photoelectrons emitted when the same metal was irradiated with light of frequency 2.0 x 101 ...

A particle is projected from a point on the level ground and its height is h when at horizontal distance a and 2a from its point of projection. Find the velocity of projection. ...

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f(x)=\begin{cases} 1-x & \text{ if } x<1 \\ (1-x)(2-x) & \text{ if } 1\leq x\leq 2 \\ 3-x & \text{ if } x>2 \end{cases} Determine the values of x for which the following function fails to be continuous or differentiable ...

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If the points (1, 3) and (5, 1) are two opposite vertices of a rectangle, and other two vertices lie on the line y = 2x + c, then find value of c. ...

The area of a square of side (2x − ay + 3) is A(x) + a2y2 + 2y (2x + 3), where A(x) is a polynomial in the variable x. What is the value of the constant a? ...

If x-a is a factor of x3-a2x+x+2, a =? ...

ampere=charge/time A=q/t so why do we call it a fundamental unit? charge should have been the fundamental unit like time. ...

(1), (2,3,4), (5,6,7,8,9),.... Find the sum of numbers in the nth group ...

How is a mirage formed? Please post a detailed explanation along with diagrams. ...

If positron is present in the nucleus of every substance, everything should have had a positive charge. Why is it not so? ...

A car and truck start from rest at same instant, with car being a little behind the truck. The truck and car has a constant acceleration of 2.2 m/s2 and 3.5 m/s2 respectively. the car overtakes the truck when it(truck) has mo ...

Find the solution: x - 1 = 1/3 + 1/(2 + 1/(3 + 1/(2 + .....)to ∞ ) ) ...

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tan-1x,tan-1y,tan-1z..are in A.P and x,y,z are also in A.P ( y being not equal to 0,1 or -1)then ...... a)x,y,z are in G.P b)x=2y=z c)N.O.T ...

Lim(x→∞)[ x2+1/x+1 -ax-b]=0 find a & b ...

1/1.2 + 1/2.3 + 1/3.4 +...till infinite ...

Find the angle between two vectors A and B, when A = 10i + 10j and 1. B = 5i - 5j 2. B = - 5j 3. B = - 5i + 5j ...