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This is a brilliant brilliant proof i read today... *Image* This is from a book called problem solving strategies... (it is a brilliant read!) ...

consider a plane progressive wave y=A sin(kx-wt) propagating in a string having tension F. What is the linear impulse given by the F-transverse acting at x=0 on the time interval t=0 to t= T/4? (asumptions tanθ≈sinθ; Ampl ...

ill add the pics.... ...

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1. WHICH CAN FORM A STABLE HYDRATE A>CYCLOPROPANONE b>HCHO c>HEXAFLUOROACETONE D>CHLORAL(CCL3-CHO) 2. X-->Y..ACTIVATION ENREGY FOR FORWARD AN D BACWARD RXN IS 15 AND 9kJ/mol RESP....P.E. OF X=10kJ/MOL..THEN A)T ...

q-1) each carbon atom is sp3 hybridised in diamond. the no. of tetrahedral voids occupied in diamond are? a)25% b)50% c)75% d)100% q-2)in what mass of water must 25g of CuSO4.5H2O be dissolved to obtain an 8% solution of CuSO ...

How newton founded his II and IIIrd laws ? ANS >>>> He gave a force " F " by kicking a goat, it made a sound " Ma " so he formulated IInd law " F = Ma " AFTER a few seconds goat kicked him back. Then he formulated ...

*Image* Ans : mL2 ...

statement 1: 0∫Π1/1+5cosx=Π/2 statement 2:0∫af(x)dx=0∫af(a-x)dx ...

what is potential drop??plz explain in ur language.. ...

1..why strong electrolytes donot hydrolyse in solution ?????[2][2][2][2][2] ...

Rounding up physics for jee: this thread is started with the intention of bringing together concepts,notes and details in physics fro jee for revision. would like to ask all for contributions. 1)In case of electron nucleus sy ...

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What is the shape of I3- ? What is the geometry of I3- ? When do we write TBP and when linear,i.e in which case we consider l.p's ? ...

1. a box contains 8 pairs of shoes. if 4 shoes are selected at random then find the probabilty that exactly one pair of shoes is selected?? 2.neha's tv has only 4 channels; all of them quite boring,hence it is not suprising t ...

1) find maxima of xy2z3 provided : x + y + z = 6. 2) find maxima of (x-3)2 + (y-2)2 provided : (x+3)2 + (y+2)2 = 4 ...

Question 1 *Image* --------NaNH2,NH3------->-----CH3I------> Please write steps. ---------------------------------------------------------------------------------------- Question 2 *Image* ----MeI-->---Ag2O,H2O----&g ...

A catalyst decreases the energy of activation of the reaction : A--->B,ΔH=37.012 Kcal,by 2 %. At 27 C 4 x 10-8% of the product molecules i.e B is able to cross over the potential barrier in absence of catalyst.How many ti ...

1.Pb,Sn are extracted from their ores by: a) C reduction and self reduction respt. b) self reduction and C reduction respt. c) electrolysis and self redn respt d) self redn and electrolysis respt (2004) 2. when Fe is dissolve ...

Q1: *Image* ... I can't think what to 'think' in this. *Image* ...

use of socl2 is a better approach 2 convert an alcohol 2 alkly chloride with compared 2 use of pcl5 --- please justify !!! ...

∫(x7m+ x2m + xm).(2x6m + 7xm + 14)1/m.dx (Have seen these sort of Qn(s) b4 too,,,A hint to start wud be enuf...) ...

*Image* how to apply Wheatsone's bridge and thermal resistence here?? please explain... ...

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What effect does electronegativity difference between bonded elements have on bond strength ? ...

*Image* *Image* where am i making the mistake???? the second solution is given in the book!! where am i wrong in my solution(1st one).....?? ...

how to find the locus of a point P outside a circle, when the angle between the tangets frm that point to the circle is given...??? plz giv me the entire algorithm... ...

(1) A bag contains 4 balls. Two balls are drawn at random and are found to be white. What is the probability that all balls are white? ...

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Q.Indicate the type of isomerism exhibited by the following complexes,their number and draw the structures for the isomers: 1) [Co(NH_{3})_5(NO_{2})](NO_{3})_{2} (The ans given is 10,and it also states that there is geometric ...