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Your friend has two children. You meet one of them and find out that he is a boy. What is the probability that the other child is a girl? P.S. - A child can only be a boy or girl ...
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I have not been able to understand Rolling Friction. Could someone make it more clear to me? ...
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Many Blocks are placed one over the other such that some part of the upper slab hangs out of the lower one. How will you Determine the stability?? eg: assume that there are 4 blocks. each of length 1 m. The 1st block is on gr ...
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Its just to find the eqn of this....in rest *Image* ...
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generally they say that moment of inertia cannot be more than MR*2.but there is a case where it can be greater than MR*2.can anyone describe one such case? nishant bhai please dont answer this. ...
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I personally dont like pseudo force.. (Used to love it when I was in class xi) but when i came to class xii.. i started to hate it.. Yeah there are some problems which are solved in a flash by using pseudo force.. but there a ...
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*Image* A Long bus has to be passed from the top to the wider road on the side horizontally. The width of the road at the top= a The width of the road at the side= b Find the longest bus that can be made so that it ca ...
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4. Find the coefficient of x^n in the expansion of (1+x/1!+x^2/2!+ ...........x^n/n!)^2 ...
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*Image* A projectile is fired with a speed 10 m/s , at an angle 30° with the horizontal.Find the time after which the velocity is perpendicular to the initial velocity of Projection.Take g as 10 m/s^2. 1.2s 2.2.5 s 3.1s 4.No ...
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A uniform rod of length l is pivoted at pt. A.It is struck by horz. force which delivers an impulse J at distance x from pivot.For what value of x , the impulse delivered by pivot is equal to zero?????? ...
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pls tell me how to find the hybridisation of a complex compound or ion? ...
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Find the remainder on division of the following expressions.... 1) 502008 by 7 2) 2008 by 7 3) 20082008 by 13 4) (1!+2!+3!+..........2008!) by 2008 5) Last 3 digits of (1!+2!+3!+..........2008!) 6) (1!+2!+3!+..........2008!) ...
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PS:THIS FORMULA WILL ALWAYS GIVE YOU THE CORRECT ANSWER Just get through wid all this u'll find inorganic petty easy.... SHORTEST FORMULAE FOR HYBRIDIZATION: No of valence electrons + No. of atoms attached to central atom 2 C ...
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Yesterday Philip was frustrated at the lack of gud problems...I am posting some for everyones practice..........2009 aspirants should solve them and put up solutions here for 2010 students to learn............. Some might be ...
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find no. of ways in which 4 letters can be put into 4 envelopes such dat nothin occupies its original place.............. ...
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this thread is only for integration sums............ AND YA FORGOT TO TELL ALL TARGETIT USERS, I HAVE COPIED ALL THESE SUMS. SO KISIKO GAALI DENA HAIN YA KUCH KEHNA HAIN, PLEASE VISIT http://targetiit.com/profile711.html AND ...
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Suppose you find a motionless rope reaching vertically up in the sky (without anybody holding the other end) and hanging down nearly to the ground. What would be the length of the rope? ...
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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 ...
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A heavy, flexible, inelastic chain of length L is placed almost symmetrically onto a light pulley which can rotate about a fixed axle, as shown in the figure. *Image* What will the speed of the chain be when it leaves the pul ...
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*Image* ...
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Two bubbles (same liquid) of radius r and R (R>r) are connected by tube of negligible volume. The tube has a valve. When the valve is opened, what will happen to the sizes of the bubbles. (qualitative and not quantitative ...
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Q.1 A ball B1 with mass(very small) m1 sits on the top of another ball B2 of mass m2. The bottom of B2 is at a height H above the ground and the bottom of B1 is at ht H+D above ground. Both ball are dropped from rest. All col ...
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what is the coefficient of x99 in (x-1)(x-2)(x-3)......(x-100) is 1. -5050 2. 5050 ...
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*Image* The figure shows a rope looped over two pipes A and B.If the coefficient of static friction is 0.25 in both the surfaces , determine smallest and largest values of m for which equillibrium is possible ...
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Point A moves uniformly with velocity 'v' so that the vector 'v' is continually "aimed" at point B which in its turn moves rectilinearly and uniformly with velocity u<v. At the initial moment of time v perpendicular to u a ...
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If (1+x)^{n}=C_{0}+C_{1}x+C_{2}x^{2}+.......C_{n}x^{n} then prove that \sum_{0\leq i}^{}{\sum_{<j\leq n }^{}{}}C_{i}C_{j}(i+j)=n(2^{2n-1}-\frac{1}{2}. ^{2n}C_{n}) ...
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This one appeared in one of the Russian Olympiads. Find the final five digits of the number N = 999...9 that contains 1001 nines positioned as above. ...
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Consider two identical spheres,one of which lies on a thermally insulating plate and the other hangs on an insulating thread.Equal amounts of heat is given to the 2 spheres. Which will have a higher temp. ?? ...
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*Image* all the spheres have equal mass.....and they undergo perfectly elastic collision amongst each other... they hav velocity whose magnitude is written over the arrows and the direction of their initial velocity is repres ...
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Find the greatest no in 300! and 100300 ...
