Recently Active Questions

The incenter of traingle formed by lines x=0,y=0,5x+12y=0 is______ ...

Q1if a,b,c are the three terms of AP then prove that the line ax+by+c=0 always passes through a fixed point. Q2if a,b,c are the three terms of GP then prove that the line ax+by+c=0 always forms a triangle with axes of ...

can one cross a river if velo of river is greater than man's!!!!!!! ...

Find the plot of the points on the complex plane such that |4z-2i|< Im(4z-i) and |z-1|<4 I have given this as a follow up to yesterdays' question! (It is simpler than that one though!) ...

This is another good one about complex numbers. I am not trying to get a solution. I am sure many of you can. I got this question from a user(Integrations) here. (I modified that one slightly!) I want to stress the importance ...

what is vapour density of a mixture ...

For the system at rest shown in fig., determine the accelerations of all the loads immediately after the lower thread keeping the system in equilibrium has been cut. Assume that the threads are weightless and inextensible, th ...

if f(x-f(y))=f(f(y))+xf(y)+f(x)-1...........find f(x)...... ...

2C2H5Cl + 4Pb/Na---------> products the products are I)tetra methyl lead II)dimethyl lead III)toluene IV)ethyl benzene options are: a)I and II b)I and III c)I and IV d)II and IV ...

3.9 Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 km h–1 in the direction A to B notices that a bus goes past him every 18 ...

If orthocentre of triangle ABC is (4,3),centroid is (6,5) and A is (0,3),then vertices of B can be..... ...

BC is latus rectum of a parabola y2=4ax and A is its vertex , then minimum length of projection of BC on a tangent drawn in the portion BAC is ...

the st lines 12x-5y-17=0 and 24x-10y+44=0 are tangents to the same circle.Then the radius of circle is ?? ...

When do you do get more wet - when you walk in the rain or when you run? ...

a physical quantity is related to four variables as Ω =( a^3.b^2 ) / √y . n the percentage errors in measurement of a,b,y,n are 1%,3%,4% and 2% respectively. if value of Ω is calculated as 3.763 unit from the given va ...

the common chord of a circle with centre (-4,0) and a parabola y2=8x subtends an angle 90 at the vertex.Find the radius of the circle. ...

*Image* *Image* i will try to write the tests for carbonyl groups n amines as well.. any other user may also write .. :) ...

Prove rigorously that for an isoceles prism a ray of light falling on one side will suffer minimum deviation when angle of incidence= angle of emergence .. ...

iif d roots of d equation z^2+az+b=0 are imaginary then find d condition on a ,acon ,b,b con tell me d way 2 saolve such q's plez b quick :'( ...

Find common roots of equation z3+2z2+2z+1=0 and z1985+z100+1=0 ...

which of the following reactions show the traits of nucleophilicity and acidic character of carbonyl carbon: A)Reformatsky reaction B)Aldol condensation C)Cannizaro reaction D)Witting reaction ...

If x,y,z are respectively sines and p,q,r are respectively the cosines of angles α,β,γ which are in A.P with common difference 2pi/3 ,then 1)x+y+z=? 2)p+q+r=? 3)xy+zx+yz=? ...

prove tan a + tan 2a + tan 3a = tan a . tan 2a . tan 3a my friend gave me from school.. i cant get anything to work on.. this is so tough :( ...

A thermometer at rest in an ideal gas records a temperature T. The same thermometer when moving with a velocity V in the positive x-direction records a temperature T'. IF m is the mass of the gas molecule, then: a)T=T ...

In a free space the, a rifle of mass M shoots a bullet of mass m at a stationary block of mass M distance D away from it. When the bullet has moved through a distance d towards the block, the centre of mass of the bullet-bloc ...

Two particles of masses m1 and m2 in projectile motion have velocities v1 and v2 where velocities are vectors, at time t=0. They collide at time t, their velocities being v1' and v2' at time 2t. the value of modul ...

A mixture of AgCl and AgI is heated in a current of chlorine gas,thereby converting AgI into AgCl .This conversion causes a loss of 60% of original weight.Find % of chlorine in the mixture ...

An element X reacts with hydrogen leading to formation of a class of compounds that is analogous to hydrocarbons.5g of X forms 5.628g of a mixture of two compounds of X(XH4 and X2H6)in the molar ratio 2:1.Determine molar mass ...

What mass of Cu2S and CuS will be produced by reaction of 10g Cu and 4g S leaving no Cu or S........... ...

A catalyst a)increases the average kinetic energy of the reacting molecules b)decreases the activation energy c)alters the reaction mechanism d)increases the frequency of collision of reacting species ...