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Let and c be two vectors perpendicular to each other in the xy-plane. All vectors in the same plane having projections 1 and 2 along b and c respectively, are given by ...

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this question is from co-ordinate geometry... if the straight lines y=4-3x ; ay=x+10 ; 2y+bx+9=0 represent the three consecutive sides of a rectangle then what is the value of ab? plz show the work out as well thnx in advance ...

24)Which of the following statements is/are true regarding cell structure? (i) The nucleoplasm and the cytoplasm together make up the protoplasm (ii) Chloroplasts are type of plastids, which occur in plant cells (iii) In many ...

Q) ?? ...

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The value of i log(x – i) + i2+i3 log(x +i) + i4( 2 tan-1x), x> 0 is (A) 0 (B) 1 (C) 2 (D) 3 ...

The product of n positive numbers is unity.Then their sum is a.a positive integer b.divisible by n c.equal to n + 1/n d.never less than n Let the numbers be a1,a2,a3.......an Applying A.M>=G.M we get, a1+a2+a3+............ ...

Let f(x+y)=f(x).f(y) and f(x)=1+sin(3x).g(x) where g(x) is cont. , then f'(x) is a) f(x).g(0) b)3g(0) c) f(x).cos(3x) d)3f(x).g(0) e)3f(x).g(x) ...

A parabola is drawn touching the axis of x at the origin and having its vertex at a given distance k from the axis.Prove that the axis of the parabola always touches x2=-8k(y-2k). ...

If f(x+y)=f(x)f(y) for all x and y and f'(0) exists show that f'(x)=f'(x).f'(0) for all x ...

Consider a 25*25 grid of city streets. Let S be the points of intersection of the streets, and let P be the set of paths from the bottom left corner to the top right corner of which consist of only walking to the right and up ...

Point P(a, b) is in the first quadrant. A circle of radius r, centre P and containing points in each quadrant is drawn. If AK is the area inside the circle in the Kth quadrant, K=1, 2, 3, 4, then A1-A2+A3-A4= (a) ab (b) 2ab ( ...

*Image* Ans) is -12 v/m bt it shld be 12 v/m na...?? ...

What is thermal De-Broglie wavelength??? Please give a simple explanation. ...

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in how many ways we can make a 4 digit no. using 1,2,3,4 and what's the sum of all the numbers obtained?(repeatations not allowed) ...

i am sure option b is correct please check the question ...

From the metals Mg and Fe, select a different metal in each case- a) Does not react with dil hydrochloric acid b) Does not react with cold water but reacts with steam when heated.... This question came in my school chemistry ...

What is the process used to make ammonia? ...

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My first question is how bond angle is related to pKa values of a compound....Heres d question Q1. Selected bond angles for five hydrocarbons are shown below. Arrange these hydrocarbons according to their pKa values, from low ...

If a,b,c be the pth,qth and rth terms of an HP respectively then prove the system of equations- (bc)x + (ca)y + (ab)z = 0 px +qy + rz =0 and x+y+z=0 has ∞ number of solutions ...

A small box is placed on a conveyor belt that moves with constant speed v0=1m/s . Due to a technical malfunction, the belts starts moving left and right at constant speed (see the graph below). The coefficient of kinetic fric ...

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Find incenter of a triangle whose sides are 7x-5y+11=0, x + y -15=0,7x+17y+65=0 obtain the equation of the circle ...

A square loop of side length ' a ' , mass ' m ' and Resistance ' R ' enters a uniform magnetic field (B=B0 (-k)) with velocity ' v° ' at t = 0 sec Plot the variation of ' v ' with the distance from O ( Assume that ' v ' is e ...

The Joint Admission Board of the Indian Institutes of Technology (IIT) has officially released the schedule for JEE (Advanced) - 2014 for admissions to the IITs. The JEE Advanced will be held on May 25, 2014, a week in advanc ...

Bohr said that electrons do not lose energy when they accelarate within discrete energy levels?? Why is that?? After all, the electron is still accelarating and according to Maxwell's Electromagnetic Theory, it shoul be givin ...