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∫x2/√1-x4dx ...

For a cell, the terminal potential difference is 2.2 V when the circuit is open and reduces to 1.8 V, when the cell is connected across a resistance, R = 5W. The internal resistance of the cell is a) frac{{10}}{9}Omega b) fra ...

a battrry of emf 10V and internal resistance 0.5 ohms is connected across a variable resistance R. What is the value of R for which the power delivered in it is maximum? ...

∫√cotx+√tanx ...

∫√cotx+√tanx ...

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if a x x x x b x x = f(x)-xf/(x). x x c x x x x d then f(x)=? ...

Try to find the sum S=1+2+3..........+100 by this trick below S = 1 + 2 + 3 + 4 + ........... 100 S =100+ 99 + 98 + 97 + ........... 1 Add both and see what happens Note: This is only for class IX - X guys.. Not for every one ...

A car traveling at 22.4m/s skids to a stop in 2.55s. Determine the skidding distance of the car (assume uniform acceleration). ...

Which one of the following has variable valency? A. Chlorine B. Sulphur C. Iron D. Sodium Your answer : B Correct answer : C Why? ...

surrounding groups affect the energy of some of d orbital more than the others. thus, the d orbtals are no longer degenerate- why should surrounding groups affect the energy of some d orbital more than the others when they r ...

What is the total spin resulting from a d ^ 7 configuration ? ...

How many images will be formed when two mirrors are kept perpendicular?? 5 7 2 3 Your Answer d Correct Answer b how it is possible?MY WAS 3. 8)Find the distance traveled by light in 0.01 seconds in km 3X10^5 3X10^10 3X10^7 3X ...

If every action has an equal and opposite reaction, then how do we do anything?? ...

A gun is fired from a moving platform and the range of the shot is R when the platform is moving forward and S when the platform is moving backward. The velocity of the shot is V. Prove that the gun is elevated at an angle ta ...

If cosθ=ncos(θ+2α)then show that (n+1)tan(θ+α)=(n-1)cotα ...

In Standard Hydrogen Electrode represented by Pt(s)|H2(g)|H+(aq) has the reaction H+(aq) + e-→ ½H2O.. so.. there is a gain of electrons=> reduction=> its a cathode.. the why is the standard hydrogen electrode taken a ...

In Standard Hydrogen Electrode represented by Pt(s)|H2(g)|H+(aq) has the reaction H+(aq) + e-→ ½H2O.. so.. there is a gain of electrons=> reduction=> its a cathode.. the why is the standard hydrogen electrode taken a ...

Three identical spheres of mass 1 kg are placed touching each other with their centers on a straight line. Their centers are marked K,L and M respectively. What is the distance of the center of mass of the system from K? ...

What is the meaning of μμC? ...

Two point masses m and M are separated by a distance L. What is the distance of the center of mass of the system from m? ...

A 60kg body is pushed with enough force to start it moving across a floor and it continues to act afterwards. The coefficient of static friction is 0.5 and the coefficient of sliding friction is 0.4 . Calculate the accelerati ...

A particle of mass m is executing uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum,calculate the radial force acting on the particle. ...

A particle moves along a circle of radius (20/Ï€)m with constant tangential acceleration. If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun,what is the tangential acceleratio ...

A motorcyclist starts from the bottom of a slope of angle 45° to cross a valley. The width of the valley 90m and length of the slope is 80 2 m. What is the minimum value of u (initial velocity)? ...

A cannon ball is fired with a velocity v such that it makes an angle θ with the horizontal. At the highest point,the cannon ball splits into two parts of equal masses. One of the parts retraces the initial path of the ball. ...

two conducting spheres of radii r1 and r2 have charge q1 and q2 respectively.after bringing them in contact,what happens to the energy of the system? a)no change b)increase if q1r2≠q2r1 c)decrease always d)decrease if q1r2â ...

Factorize the following expressions: 1. a/b + b/c + c/a + a/c + b/a + c/b +3 2. (a2 - b2)(c2 - d2) - 4abcd ...

A rod of length 10 m. is travelling on a smooth,level,horizontal surface.Beyond a point A,the floor ceases to be smooth and the coefficient of friction is k=0.1.The rod is travelling such that it is moving towards the point A ...