Recently Active Questions

T is a parallelopipe in which A, B, C ,and D are the vertices of one face. And the face just above it has corresponding vertices A`, B`, C`, D`. T is now compressed to S with face ABCD remaining same and A`, B`, C`, D` shifte ...

\frac{x-1}{2}=\frac{y+1}{3}=\frac{z-1}{4} and \frac{x-3}{1}=\frac{y-k}{2}=\frac{z}{1} intersect find the vlaue of k! ...

I am presently in class 10 and have the basic books of PCM needed for JEE but have also got some old books and want to know whether they’ll b useful or not they r I.E Irodov (nice book certainly but of yr 2000) Reactions Re ...

Value of K such that \frac{x-4}{1}=\frac{y-2}{1}=\frac{z-k}{2} lies in the plane 2x-4y+z=7 is ...

This is a question straight from Resnik-Halliday,although i cudn't find the answer anywhere in the book.(I got to know it frm a TV program) We all know that a black-hole is a star that has collapsed into itself so that it has ...

why is charge never stored in battery???? ...

S-I if |z1-1|<4 , |z2-2|<5, |z3-3|<6 then |z1+z2+z3|< 21 s-II |z1+z2|≤|z1|+|z2| ...

Given are two curves x2/a2 +y2/63 =1 and y2=4x The maximum integral value of a for which there is only one common normal to the two curves is: A. 7 B. 8 C. 9 D. 10 pls help!! ...

If α, β,γ are the cube roots of p,(p<0), then for any x,y,z (α*x+β*y+γ*z)/(β*x+γ*y+α*z) is equal to (A) α *ω+β*ω2+γ (B) α*β*γ (c) ω,ω2 (d) none ...

You might say why the QOD has become 5 questions a day! but its JEE season and we have to change ourselves in a similar way ;) Solve these: (Again a few of these are tough!) 1) for x>0, let f(x)=\int_{1}^{x}{\frac{ln t}{1+ ...

N identical balls lie equally spaced in a semicircle on a frictionless horizontal table, as shown. The total mass of these balls is M. Another ball of mass m approaches the semicircle from the left, with the proper initial co ...

*Image* for the arrangemnet shown in thefigure, the spring is initially compressed by 3cm. when the spirng is released the block collides with the wall and rebounds to compress the spring again. q>> if the time starts a ...

An unbiased die, with faces numbered 1,2,3,4,5,6 is thrown five times and list of five no.s showing up is noted, then... 1) The probability that among the no.s 1 to 6, only four no.s appear in d list is... a) 883/7776 b) 3600 ...

THE AREA ENCLOSED BETWEEN y2=x AND THE LINE x+y=2. me getting 7/6+something/2 [266] [265] [264][262][269] ...

[2] [2] pls help yaar mujhe chemical equillibrium main dikkat aarahi hai pls help karo badi basic doubts aarahi hai ..... jaise yeh question hai 3g mole of pcl5 is heated in a flask of 4ltrs at equillib it dissociates to pcl3 ...

find the ratio of adiabatic bulk modulus and isothermal bulk modulus of a gas ? γ=CP/CV ...

when light travels from one medium to other its speed changes but whether its colour changes or not i.e. whether colour is determined by frequency of wave or its wavelenght secondly we have done in dopplers effect that since ...

Can conduction and displacement current coexist in the same region???If yes,give exxample ...

1. Consider two bubbles of radii r1 and r2 respectively. Let the are allowed to coalesce, Find the common radius of the interface ...

Two capillary tubes of same length and radii in the ration 1:2 are connected in series and a liquid flows through this system understreamline conditions. if the pressure across the two extreme ends of the tube system is 1m of ...

*Image* ...

is magnetic force conservative ????????? ...

If a1,a2,a3..............an are n postive numbers in arithmetic progression with common difference d≠0 and Sn = a1 + a2 + ... + an a. Sn __ n - 2(√a1 + √a2 +...+√an) (>,<,=,≤,≥ or cannot say) b. 2Sn2 > (n ...

*Image* The max value of m {in kg} so that the arrangement shown in the figure is in equlibrium is given by: 1. 2 2. 2.5 3. 3 4. 4.5 given : - M = 10 kg and μ=.1 for all surfaces ...

Draw the graph of [x]+[y]=[x+y] ...

Please tell here from where you came to know about this site... how u came here... everyone here must have a source of information...(if he had not dreamt about this site in 4'O clock morning.. :P) ...

if p is the perepndicular distnce of an angular point of cube of each side to 47 from diagonal wich does nt pass thru that angular point ,then 3p^2 is equal to ?? ...

How many Bravais Lattices can exist in nature? ...

if a1,a2....a2n form a decreasing A.P then a12-a22+a32-a42...............-a2n2= a)n(a12-a2n2)/2n-1 b)2n(a12-a2n2)/2n-1 c)2n(a12-an2)/n-1 d)n(a12-a2n2)/n+1 ...

No credits without explanation of this one.. (x2+y2-2)(xy-1)<0 draw the graph! ...