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Dont know where I am wrong....... I solved this question by 2 diff methods and am getting answers diff.....plzz tel my mistake Q A sphere of 5 kg specific gravity 2 is completely submerged into water.Find radius of sphere met ...

3 identical discs A,B,C rest on a smooth horz surface.Disc A is set into motion with speed u after which it experiences elastic collision simultaneously with B and C.Distace b/w centres of B and C prior to collision is n time ...

*Image* find equivalent capacitance....All are in μF ...

The number of ways in which the six faces of a cube be painted with six different colours is...... a]6 b]6! c]6C2 d] none of these ...

A ball falls vertically onto a floor, with momentum p, and then ball bounces repeatedly. The coefficient of restitution is e. The total momentum imparted by ball to the floor is A) p(1 + e) B) p/(1 - e) C) p(1 + 1/e) D) p{ (1 ...

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*Image* Consider a ball which is projected horizontally with speed u from the edge of a cliff of height H as shown in the Fig. (1). There is air resistance proportional to the velocity in both x and y direction i.e. the motio ...

STATEMENT:for an ideal fluid flowing thru a horizontal pipe of non uniform cross section,the pressure decreases with decrease in cross section i found this statement in an assertion reason qn and it is given that it is true,c ...

If y is a fn. of x such that y(x-y)2=x , then Find ∫dx/(x-3y) ...

c-c-c-cooet treat this ester wid given reagents ..na/ether 2liq nh3 3feso4+h2o2 4tautomerise give product ...

*Image* both of them are reacted with meoNa.what are products?? ...

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*Image* explain??????? ...

Q56) Which of the following cannot be prepared by Wurtz reaction? a) C3H8 b) CH4 c) C4H10 d) C2H4 ...

why substitution reactions favoured at low temp????????? ...

Two adjacent sides of a cyclic quadrilateral are 2 and 5 units,the angle between them is 60 degrees . Area of quad = 4 3 units ,find the area of the circle ...

in this question what will be the plane at which the nucleophile approaches the molecule and pls give me ur explanation *Image* ...

An object with a surface area of 0.2 m², Emissivity: 0.8 Heat capacity: 1320.0 J/K Temperature of 59.0 °C. It is then place in an environment at 38.0 °C and it cools until it is in thermal equilibrium. Stefan constant: σ ...

A conducting rod of length l is hinged at a point.It is free to rotate in a vertical plane.There exists a uniform mag. field B perpendicular to the plane.The rod is released from horizontal position.What is the potential diff ...

THIS IS VERY MUCH FROM SYLLABU S[/ *Image* ...

A massive wooden plate of unknown mass M remains in equilibrium in vacuum when n bullets per second are fired on it.The mass of each bullet is m (M>>m).Each bullet strikes the centre of the plate with speed v,coeff of r ...

*Image* sorrry 4 postin such a horrific image ....LOL...... ans = a ...

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a body whose dimensions may be neglected is placed inside a thin homogenious sphere.prove that the force of attraction acting from the sphere on the body is zeroirrespesctive of its position inside the sphere! ...

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*Image* A wall is moving with velocity u & a source of sound is moving with velocity u/2 in the same direction as shown in the figure. Assume sound travels with velocity 10u. The ratio of incident sound of wavelenth on the wa ...

∫ √ (e2t+e-2t) dt the square root is for total thing ...

can we integrate dirichlet function ? sorry for silly doubt :P ...

*Image* plz donot give the ans is yes or no but expln ...

A POINT SOURCE IS EMITTING SOUND IN ALL DIRECTIONS.FIND THE RATIO OF DISTANCE OF TWO POINTS FROM THE POINT SOURCE WHERE THE DIFFRERENCE IN SOUND LEVELS IS 3 db A)2 B)3 C)0.5 D)√0.5 ...