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Name a few bio-degradable polymers. Give 2 uses of each of these polymers: Natural rubber, cellulose, nylon, teflon and PVC. ...

Find the Unit digit of 127141 + 141127 + 127.141 + (127.141)127.141 *Another "Backlog" Question of the day! ...

Maxima Minima. Among All quadrilaterals of Perimeter P, which has the highest area.. * Prove.. It is a square. ...

This is very simple and basic question The pH of aqueous solution of NaOH is given 7.3 at 298 K Find the concentration on Na+ in the solution Kw=10-14 Provide your method also ...

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 ...

If you can solve this question, I dont think you should worry too much about this chapter on a whole. This is probably everything in capacitance. *Image* There are two smooth dielectric slabs of mass m. And dielectric constan ...

This is a very standard problem. Many of you must have solved this one. This is not for those of you who get the 99.5%ile+ in FIITJEE Mathematics tests ;) But for many other mortals who fear things. Pls try to solve this. It ...

*Image* A uniform sphere of mass m and radius r rolls without sliding over a horizontal plane, rotating about a horizontal axle OA. in the process, the center of the sphere moves with velocity v along a circle of radius R. Fi ...

Prove some of these very easy but tough looking things (Dont get bogged down.. they are simple.. If you dont know them try to know these simple things! With the proof of course) 1) Any Prime is of the form 6t+1 or 6t-1 2) Any ...

This is very very Interesting question and will make you think! (Hopefully) Even if you dont get the complete solution.. do post the partial ones.... An are sets for all n's (integers!) The property they follow is that th ...

What is the value of *Image* *Image* Find I1 - I2 (Given N is any " REAL Natural NUMBER" greater than 1! Well well i thought to give a Real number.. then i thought that it would become a bit too dirty to calculate... ...

What was the last time I gave a maths question? An easy one.. sort of! f(x)=[x] g(x) = f -1 (x) Find the solution for f(x)=g(x) ...

*Image* Find the center of mass. (this question is taken(as is) from a book meriam kraige which all these fiitjee and other ppl use to LIFT their quesitons from) Do not read this book. I will make sure you guys get all the qu ...

Prove that a charge that enters a magnetic field with no other force takes a sprial path If you are sure you know the proof .. nothing to worry. If you dont make sure you derive it. Pls give every step The importance of this ...

*Image* Find the effective Resistance between A and B in the given circuit! ...

A gas consisting of N-atomic molecules has the temperature T at which all degrees of freedom (translational, rotational, and vibrational) are excited. Find the mean energy o f molecules in such a gas. What fraction of this en ...

A body of mass m fell from a height h onto the pan of a spring balance. The masses of the pan and the spring are negligible, the stiffness of the latter is k. Having stuck to the pan, the body starts performing harmonic oscil ...

Easy if u have seen. Try this even if u havent. It is a good one to know :) x+y+z=6 all are positive reals! Find the minima and maxima of a2/x + b2/y + c2/z where a, b, c are integers! Really Sorry I made a mistake in thi ...

A man climbs a flight of stairs. (Remember that he is not only moving forward but upwards as well.) Assume that he travels H height and L length(in horzontal distance) Man's mass=M. he carries a briefcase of mass m Ex ...

Calculate the value of γ =Cp/Cv for a gaseous mixture consisting of v1=2.0 moles of oxygen and v2=3.0 moles of carbon dioxide. The gases are assumed to be ideal! (This question was given by ashish.. It was attemp ...

*Image* Two rods collide with each other as shown above .. What is the motion of the two after collision.. Lenghts are equal and mass is the same (identical rods) Assume mass m and length L take coefficient of elasticity as e ...

The field potential inside a charged ball depends only on the distance from the center as V=ar2 + b; a,b are constants. Find the space charge distribution ρ(r) inside the ball. Src: Irodov ...

This one is a one liner.. A very objective paper question. Pls use the Hide link. Many of u might feel this not good enuf for a question of the day.. But then all ppl are not smart enuf either :) find the smallest distance be ...

*Image* Water flows in a circular path as shown.. the speed is such that it flows at a constant speed "v" throughout the width of the river. What is the position of the swimmer who swims perpendicular to the water flo ...

Part 1: On a circle which circumscribes a n-sided polygon A1,A2,A3,.... An, a point M is taken. Prove that the sum of the squares of the distances from this point to all the vertices of the polygos is a number(independent of ...

The *Image* The slighly less colored ball hits the 3 balls which are touching each other. The three balls at the back are at rest. The fourth ball hits the three simultaneously.... Find the velocity of the 4 balls after colis ...

In a Lattice structure, The atoms have small spaces between them. These spaces are filled by another atom! (of course smaller in size) so that they just touch the larger ones(These smaller ones are the largest ones possible w ...

*Image* Find the effective resistance across AB ...

Find the area under the graph [y]=sin[x] for x ε [-100,100] ...