Recently Active Physics Questions

Consider a solid NON-CONDUCTING sphere(of radius R) of mass M bearing charge (+)Q uniformly distributed over its volume... at a distance a(< R) there is a spherical cavity in the sphere of radius r. the line joining the ce ...

bahut dino baaaaaad!!! hope this is not a repitition of one of the previous ones!!! *Image* a book was kept on table and it was turned to turn it upside down!! what is the work done against gravity?? ab is ball mein direct DL ...

i am back with it again......... think as air gets heated up, it rises up so is there any doubt?? no, so all air that gets heated up rises up.... then answer this siimple question.... if that was true darjeeling and sikkim wo ...

In the following R-C circuit, the capacitor is in steady state. The initial separation b/w the capactor plates is xo. If at t=0, the separation between the plates starts changing so that a constant current starts flowing thro ...

Child labor is eating up the world from inside and we are not even noticing. We have been blessed to have had a good education-thanks to our parents.. But then again there are some children in this country who can not even wr ...

*Image* all surface are roughf except the horizontal one.prove tha cofficent of friction >tan[(pie-alpha)/4] to keep the system at rest?? ...

Here's a doubt from my XI days that hadnt been solved till recently possibly bcz i hadnt given much though abt it. THe question is as follows Q. Consider a smooth rod revolving about one of its ends on a horizontal frictionle ...

A smooth wedge of mass M with a small block of mass m at the highest point of its inclined surface is released from rest on a fixed smooth horizontal surface, as shown. Initially block is at rest with respect to the wedge sur ...

PLEASE GIVE ME SOLUTION OF THE PROBLEM IN THE LINK http://www.targetiit.com/iit-jee-forum/posts/capacitors-ques-17240.html ...

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*Image* dont know where i am making the mistake but i am getting something like this 1+\tan(\theta +\phi)\tan(\phi)=0 ...

If a proton moves with a velocity 'v' parallel to a current carrying wire,a magnetic FORCE acts on it.If the same particle is seen from a frame moving with an identical velocity in the same direction then.... 1)Will the magne ...

If two circle touch each other, at their highest or lowest points, and a straight line be drawn through that point to meet both circles, show that the time of sliding down form rest down the portion of this line intercepted b ...

1)A shell is fired from a cannon with a velocity V at an angle θ with the horizontal direction. at the highest point in it path it explodes into two pieces of equal masses. One of the pieces retraces its path to the cannon. ...

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COPYING DOWN THE WHOLE QUESTION: plz do this question just like you have just entered 11th and don't know anything about acceleration of a particle in circular motion Q- Suppose we are told that the acceleration 'a' of a part ...

hey pls checkout my problems and help me out!!! a request.... ...

pls solve my 6 questions dat i hav posted here....plsssssss ...

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Q The objects lying at the equator will fly off the surface of the earth. if the speed of rotation of the earth increases n times its present value then n is _______ Q The largest and the shortest distance of the earth from t ...

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1)Consider two observers moving with respect to each other at a speed v along a straight line. they observe a block of mass m moving a distance l on a rough surface. Which of the following quantities will be same as observed ...

Ques 1) If excess charge is placed on a spherical shell that is made up of conducting material, then the excess charge spreads uniformly over the external surface. Is this true in case if the shell is made up of NON CONDUCTIN ...

A point particle having a mass m is coming from V under the mutual gravitational attraction of the sphere of radius R , in which a negligibly small hole is made so that the particle may enter . Find the time it takes to reach ...

Have you ever observed that a pendulum clock(normal household clock) oscillates continuously even air friction is acting opposite to the direction of its motion. it oscillates due to the force of repulsion between two magnets ...

PLEAZ TRY THIS............... 1) a) find the min. velocity with which an object must be projected vertically upwards so that it doesen't returns back to the surface? b)what should the min. radius of the earth for the earth to ...

*Image* Show that when when a bar of length l, breadth b, and depth d (supported near its ends) , when loaded at the centre by a load W sags by an amount given by \delta = \frac{ W\l^{\3}}{4\ b\ d^{\3}\ Y} where Y is the Youn ...