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*Image* plz try this. my method is lengthy. thus , hoping for a bit conservative than that. ...

Two masses m and 2m are attached to two ends of an ideal spring and the spring is in the compressed state. The energy of spring is 60 joule. If the spring is released, then A. the energy of both bodies will be same. B. energy ...

Another one -- down the halogen group , Silver halides form deeper coloured compounds . Why????? ...

A sequence is obtained by deleting all the perfect squares from set of natural numbers . Find the remainder when 2003rd term of new sequence is divided by 2048 ?? ...

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in a gamma decay process, the internal energy of a nucleus of mass M decreases, a gamma photon of energy E and linear momentum E/c is emitted and the nucleus recoils Find the decrease in internal energy ...

(Q) an electric filed E0i exits in a region nd a sphere of radius r is kept along the eletric field. V represents the potential, then which is one is correct 1. \frac{\partial }{\partial x} V is constant inside the sphere and ...

confused b/w ans given in book....plz reply with ur strucutres *Image* ...

Q1 A point chosen from 1st quadrant x,y ε[0,4] ,the probablity that it satisfies [x]+[y]=3 is ?? I am getting 1/16 Q2 3 points P,Q,R are selected at random from circumference of circle.Find probablity that they lie on semici ...

1. Explain how fluorine is prepared by the electrolysis of KHF . 2. Give balanced eqn for the following (i) Fluorine + NaOH (ii) Ozone + aq potassium oxide. 3. Explain exactly why an aqueous solution of potassium hexcyanoferr ...

some more simple doubts- 1)find maximum excess pressure inside a thin walled steel tube of radius R and thickness r(<< R) so that tube wont rupture(breaking stress of steel s) 2)a beaker containing water is rigidly fixe ...

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prove that \sqrt{(x_1-x_2)^2+ (y_1-y_2)^2}\le \sqrt{x^2_1+y^2_1}+ \sqrt{x^2_2+y^2_2} for all real numbers x_1,y_1,x_2,y_2 HINT: proceed by forming a triangle with suitable coordinates ...

A uniform rod of length l is pivoted at pt. A.It is struck by horz. force which delivers an impulse J at distance x from pivot.For what value of x , the impulse delivered by pivot is equal to zero?????? ...

what is spallation ,nuclear reaction and induced radioactivity ?????how to identify these all ????? ...

a uniform disc of mass m and radius R is projected horizontally with velocity "Vo" on a rough horizontal surface so that it starts off with a purely sliding motion at t=0.After time "to" sec,it acquires a purely rolling motio ...

one face of an equiconvex lens of focal length 60 cm made of glass (μ=1.5) is silvered......does it behav lik a concave or covex mirror.....find effectiv f ...

Multiple answers correct. Select correct statements about FCC (ABCAB..) structure- a) Dist. b/w nearest octahedral void & tetrahedral void is 3 a/4 b)Dist. b/w two nearest octahedral void is a/ 2 . c) Dist. b/w two nearest te ...

What is the composition of vapour which is in equillibrium at 30°C with a benzene - toulene solution with mole fraction of benzene as 0.4? P°b = 119 torr P°t = 37 torr ...

if p and q are the roots of the equation x^2 + px + q =0 then a)--- p=1 b)--- p = 1 or 0 c)--- p = -2 d)--- p = -2 or 0 ...

let S={1,2,3,.......,100} the number of unordered pairs (A,B)of subsets of S such that A and B have no ekements in common , where A or B both may be φ(null set) is ? answer : \frac{3^{100} + 1}{2} the no.of order pair is 310 ...

by mistake i filled my actual class 12 percentage in place of class 12 PCM aggregate in isat form...what to do now ???? ...

if \ a+b+c =1 ,; a,b, c \rightarrow R^+ \\ prove \ that \ \\ \\ \sum_{cyclic}{} {\frac{a}{1+bc}}\geq \frac{9}{10} ...

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If the number of 5 digit numbers in which each of the digits 2 and 5 occur only once is 64k . Then find the value of k . options --- 150 , 148 , 248 , 128 . ...

sin2 nx ------------------ dx sin2 x ...

A triangle the lengths of whose sides are a,b&c is placed such that the mid points of its sides are on the coordinate axes , if the equation of the plane of the triangle be x/α + y/β + z/γ=1 then (A) α = 1/2 (a2+b2+c2)/2 ...

A metal ring of mass m nd radius R is placed on a smooth horizontal table & is set rotating about its own axis in such a way tht each part of the ring moves with a speed v ...find the tension in d ring???????????? ...

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