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Two rods of different materials with coefficients of linear expansion α1 and α2 respectively; Young's moduli Y1 & Y2 respectively; of initial lengths l1 and l2 respectively are joined at one end. the free ends are fixed to ...

A particle is projected from a point to hit an apple as shown in the figure.The particle is directly aimed at the apple.Show that the particle will not hit the apple.Now show that if the string with which the apple is hung is ...

While deriving an expression for resultant capacitance or resistance in a parallel combination, how do we reach to the conclusion that potential difference across each capacitor is same?? ...

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The number of 5 digit numbers such that the sum of their digits is even is? ...

Predict whether the following molecules are iso-structural or not. Justify your answer. NMe3 and N(SiMe3)3. ...

Can an object have zero velocity and nonzero acceleration at the same time? Give examples. ...

The Mn3O4 formed on strong heating of a sample of MnSO4.4H2O was dissolved in 100cc of 0.1(N) FeSO4 containing H2SO4. The resulting solution reacted completely with 50cc of KMnO4 solution. 25cc of this KMnO4 solution requires ...

∫(a2-b2 *x2))-3/2 dx ...

All the values of m for which both roots of the equation x2 – 2mx + m2 – 1 = 0 are greater than – 2 but less than 4 lie in the interval : ...

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Number of permutations of 1,2,3,4,5,6,7,8 and 9 taken all at a time ,such that the digit 1 appearing somewhere to left of 2 3 appearing to the left of 4 and 5 somewhere to the left of 6 (e.g.815723946 would be one such permut ...

*Image* [x]=Greatest Integer function ...

lim n ->∞ 1/2n log(2nCn) ...

the number of four digits having only two consecutive digits identical is ?? ...

Find the coefficient of x99 and x98 in the polynomial (x-1)(x-2)(x-3).........(x-100). ...

A man stands on the top of a high building with a source of sound with frequency 1000 Hz.He accidently drops the device.Find the frequency of the sound heard by the man 4 seconds after he drops the device?(Speed of sound=320 ...

Find the no of arrangements of the word 'Delhi' if e always comes before i. ...

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Represent m6+n6 as a sum of 2 squares other than (m3)2+(n3)2. Think its easy....give it a try!:P ...

x1, x2, x3, x4 are real nos. x1 < x2 < x3 < x4. Product of any three chosen at a time + the remaining = 130. Find the sum of all possible values of x4 rounded to the nearest decimal place. ...

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The type of bond present in {N_2}{O_5} are – ...

The compound which contains both covalent and co – ordinate bond is – ...

If a0, a1, a2,... are the coefficients in the order of expression of (1+x+x2)n, prove that a02-a12+a22-.....+(-1)n-1an-12=(1/2)an(1-(-1)nan) ...

A 10-digit number has one 1, two 2's, three 3's and four 4's as its digits in some order. Prove that it can never be a perfect square. ...

How does intermolecular and intramolecular hydrogen bonding affect melting and boiling points of molecules? ...

In a ΔABC if cosA+cosB+cosC=3/2 then prove that the Δ is equilateral. ...

all possible three digits even numbers which can be firmed with the condition that if 5 is one of the digit,then 7 is the next digit is? ...