Recently Active Questions

the moon revolves round the earth 13 times in one year If the ratio of sun-earth distance to the earth-moon distance is 392 then the ratio of the masses of sun and earth will be Please solve it ...

*Image* write all the products..... ...

a,b,c......,k are positive integers such that a+b+c+....+k≤n, then can we say that n!/(a!b!c!.....k!) is also a positive integer?? solve with proof ...

A particle of mass m moves in the x-y plane, along a symmetric, frictionless, concave curve. The trajectory length along this curve is denoted by s. A uniform gravitational field acts in the negative y-direction. The particle ...

BITS requirement is proficiency in English in Board exams and 80% score in PCM!!! 2 questions arise : que1 : PROFICIENCY bole to exactly how much do v need in boards??? que2 : Does da 80% include practicals marks or is it 56 ...

a car of mass m is moving on a horizontal circular path of radius r At an instant its speed is v and is increasing at the rate a Then prove that the coefficient of friction between the ground and car is not less than a/g ...

plzz. explain me the mechanism of wacker's process ...

WHICH OUT OF A AND B ARE AROMATIC??????? *Image* ANS : BOTH ...... PLZZZ XPLAIN Y?????? CHALO BAS EDIT BHI KAR DIYA..... NOW IS IT FINE!!!!!!!!!!! ...

An octagon is inscribed in a circle.One set of alternate vertices form a square of area 5 units while the other set forms a rectangle of area 4 units,find the maximum possible area of the octagon ...

There r two sets of parallel lines,their equations being xcosα+ysinα=p; p=1,2,3,......m and ycosα-xsinα=q;q=1,2,3,4....n; and n>m wher α is constant. what is the no of squares that can be formed with these lines ...

draw the graph of y= cos(cos-1x) + sin(sin-1x) ...

a cyclist cycles along the circumference of the circular horizontal plane of radius R The coefficient of friction depends upon the distance r from the center of the plane as u=uo(1-r/R) where uo=constant The centre of the cir ...

a straight line through a (-5,-4) meets the lines x+3y+2=0,2x+y+4=0 and x-y-5=0 at b,c,d respectively.......... if (15/ab)^2+(10/ac)^2=(6/ad)^2 then the equationof the straight line?? ...

*Image* ...

A has n+1 fair coins and B has n fair coins.If they toss all the coins , what is the probability that A gets more heads than B ? ...

*Image* ...

Q1. A uniform disc of radius r is spinned about its axis to an angular velocity ω and then carefully placed with its plane on a rough horizontal surface. Find the time taken for the disc to stop rotating, given the coefficie ...

Very conceptual..........plzzzz reply as soon as possible..... Q1 A source and observer both start moving simultaneously from origin,one along X axis and other along Y axis with speed of source equal to twice speed of observe ...

the number of ordered pairs (a,b) where a,b belongs to (-Ï€,Ï€) satisfying cos (a-b) =1 and cos (a+b) =1/e will be ??????????? ...

draw the graph of sin(cos-1x)=y ...

i was doing a qeustion in shm and i am stuck up here..........plz find moment of inertia about point P (pivot point) *Image* Semi circular wire. ...

find the number of ways in which the digits of the number 125453752 can be rearranged such that no two 5's come together ????? ...

Q1 2 blocks are arranged as in figure.The coeff of friction b/w blocks is μs whereas no friction b/w floor and block.Calculate max possible amplitude for no slipping. *Image* I am getting A=μsg(m+M)/k Q2 A disc of mass m is ...

*Image* cart slides without friction. find time period ...

*Image* ...

The sequence {yn}n≥1 is defined by y1=y2=1 , yn+2=(4k-5)yn+1-yn+4-2k Determine all integers `k` such that each term of this sequence is a perfect square ...

An integer sequence {an}n≥1 is defined by a0=0, a1=1, an+2=2an+1+an Show that 2k divides an if and only if 2k divides n. ...

A lady desires to give dinner party for 8 guests. In how many ways can the lady select guests for the dinner from her 12 friends, if tow of the guests will not attend the party together??? ...

*Image* a spring is cut into three equal pieces and connected as shown.... by wat factor will the time period of oscillation changes if a block is attached before and after ????? ...

What will happen to angle of min deviation in case of prism if we change frequency of light.. ...