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a block of mass m and having a charge q placed on a smooth horizontal table and is connected to a wall through an unstretched spring of spring const. k.a horizontal electric field E is paraalel to spring is switched on.find a ...

How many total no of structural isomers r possible for C4H7cL having parent chain of 4 carbons? ...

im having a very basic doubt regarding "oxidation state".how can nitrogen have +5 oxidation state when it does not have a d-orbital??is it neccessary to have n "unpaired" electrons to show +n ox. state?and how is its maximum ...

An artificial satellite moving in a circular orbit around the earth has a total(kinetic + potential) energy Eo.Its potential energy is A. -Eo B. 1.5Eo C. 2 Eo D. Eo ...

1) f(x) = i) Sin[x] ; [x] ≠0 [x] ii) 0 when ; [x] = 0 Find -- Lim (x→0) f(x). 2) Lim(x→∞) {(x+6)/(x+4)}x+4 = ? 3) If x>0, Lim(x→0) {(sinx)1/x +(1/x)sinx} = ? 4) Lim(x→ -∞) {x4 Sin(1/x) +x2}/{1+ lx3l } = ? ...

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plz solv ethese???? 1)if a,b ,c are real a+b+c=0,then quadratic equation 3a^2+2bx+cx=0 has- a)at lest 1 root in [0,1] b)at least one root in [1,2] ...

What is the no. of ways to seat 4 boys and 3 girls around a circular table ? ...

Bent's rule is consistent with VSEPR theory. Accord. to Bent's rule, the more electronegative substituent attaches itself to hybrid orbital that contains more p-charach./less s-character. 1) Molecule/ion inwhich Bond angle is ...

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Let S1 and S2 be two slits in Young's doubles SLit expt. If the central maxima is observed at P and angle S1PS2 = θ ( θ is small).Find the y coordinates of the 3rd minima assuming the origin to be at the central maxima. λ ...

how many zeroes are there in 500!....???gud Q try it?? ...

Q1 if y=2x-3 is a tangent to parabola y2=4a(x- 1/3 ) then a= ?? i did this way..eqn of tangent to parabola:y=mx-m/3+a/m given that y=2x-3 is tangent Comparing gives us m=2 and proceeding we get a=-14/3 but ans is given a= 2± ...

Great question --- though not difficult --- If the polynomial xn + p1 xn-1 + p2 xn-2 + p3 xn-3 + ...... + pn-1 x + pn = 0 , has n real roots a , b ,c , d ... k , and p1 , p2 , p3 are all real , then find the value of , ( 1 - ...

*Image* edit: (III) is balls differnt, boxes identical Q2. There are 6 elements in a set A and 3 elements in a set B. Total no. of onto functions from set A to set B if a particular element of A is always associated with a pa ...

Q1. Light of intensity I falls on a perfectly reflecting surface at an angle θ with the normal to the surface. Find the force exerted by the light on the surface. Q2. A perfectly reflecting solid sphere of radius r is kept i ...

A particle of mass m moves due to the force = -\alpha m\vec{r} where alpha>0 is a const, and \vec{r} is the radius vector of the particle with respect to the origin. Initially.... \vec{r}=r_0\hat{i} & \vec{v}=v_0\hat{j} wh ...

Q1. \lim_{x\rightarrow 0}\frac{sintanx+ln(\sqrt{1+sin^2x}-sinx)}{ln(1+x^3)} Q2. A=\begin{bmatrix} 1 &1 &1 \\ -1 &0 &2 \\ 2 &1 &0 \end{bmatrix} , I is the unit matrix of order 3X3 and aA3 + bA2 + cA + I = B where B is null mat ...

Express (x^2+a^2)(y^2+b^2)(z^2+c^2) as a sum of two squares ...

Doubts... 1) If the equation x4 -(3m+2)x2 +m2=0 (m>0), has 4 real solutions which are in A.P., find the value of "m". 2) Let P(x) be a Polynomial of degree 4 such tht - P(1)=P(3)=P(5)=P'(7) =0. If the real number x (≠1,3 ...

which one is more reactive: alkene or alkyne? what is da case for (1)GENERAL rxns and for (2)Hydrogenation specifically?? pl giv reason also thnx ...

1. lim na sin2n!/n+1 n→∞ a E (0,1) is equal to (a) 0 (b) 1 (c) ∞ (d) does not exist 2.lim {11/sin2x + 21/sin2x+....+n1/sin2x}sin2x x→0 3. lim xn+nxn-1+1/e[x] x→∞ ...

1) In the arrhenius eqn which of the following statement is assumed (A) The fraction of efeective collisions having activation energy is equal to the fraction of total collisions having activation energy (B) The fraction of e ...

Why do we consider Earth as an inertial frame , although earth has an acceleration (centripetal) ? Can somebody apply Newton's law from space? ...

Hello friends, I am in class XI and opted for resonance material. unfortunately i didnt get key. If somebody has the key hints and solutions booklet of this lastest this year package then plz inform me. I am ready to give you ...

there are 13 couples... the men can shake hands with everyone except their wives and the women can shake hands with the men only......find the total number of handshakes..... ...

How many max no. of planes can be drawn which are equidistant from 4 non coplanar points ???? Answer given is 7 ...but shouldnt it be infinite planes ??? because centroid of four points is equidistant from all points....and w ...

If the eqn [ log12 (log8 (log4x)) ] / [log5(log4(logy(log2x))))] = 0 has a solution for 'x' when c<y<b , y≠a , where 'b' is as large as possible & 'c' is as smal as possible , then the value of (a+b+c) = (A)18 (B)19 ( ...

DOUBT f(x)= ax2+bx .FInd all possible values of 'a' such that there exist at least one positive value of 'b' for which both domain and range of f(x) lie in same set ...

*Image* Question. What amount of heat will be generated from the circuit shown in the above fig. after the switch sw is shifted from position 1 to position 2??? answer is Q= ε2C Co/2C+Co please show ur steps?? ...