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    Ip address tracing

    Ok, if u have the ip address, then u have to cionvert it to the ip number and then on referring to some datasheet u can match this ip numer to its location
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    How does a permanent magnet lift iron filings

    Evryone knows that the work done by a magnetic field is zero. Then how does a permanent magnet lift iron filings.
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    How does the magnetic field lift iron objects?

    We all know that the work done by the magetic field is zero. But, how does the magnetic field lift iron objects?
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    Why don't hydrogen atoms -> neutron + neutrino?

    Are you sure that you have studied Quantum Mechanics. :confused: if you have, then u must have come across Stationary orbits..... That is the answer to your question.
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    Help with port

    try using net USERS in ur Command prompt window to see the Ids of ppl who have logged on to ut computer
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    WinXP Right Click Menus.

    Goto start, choose run and then type regedit. Select HKEY_CLASSES_ROOT and then goto directory, and under directory u will find keys named shell (or) shellex. Expand these keys to find out which of the right click options they represent. Delete the ones that u do not want.
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    Aurora lights

    why don't u try using a cathode ray tube with some easily ionizable gas in it... place this apparatus in a dark room and lo behold, u have beautiful lights
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    Input and output voltages of a transformer?

    Heres how u do the problem.... First let me tell u the basics of a transformer. A transformer is a mutual inductance based device that transfers power from one part to the other. It does so by virtue of stepping up the voltage or the current. i.e VI = constant. So if the input voltage...
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    Electron movement between atoms

    Jumping... (or discrete Energy levels) This phenomenon is explained by the laws of Quantum Physics which state that any particle can only take discrete values of energies. i.e It can only take certain values of energies.For example if an electron can take the energy values 10 ev, 40 ev and 160...
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    Experiments regarding C of A.M.

    ... Why don't u consider making ur own Gyroscope...and spin it while sitting in a chair such that its axis of spin is perpendicular to the ground. Now make it parallel to the ground . U will find that the chair now rotates
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    Help with projectile physics

    However, for this problem, I think we should assume that the projectile hits the ground at the same angle as it was launched.... Sridhar
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    Help with projectile physics

    What is Vo? Is it the velocity of projection, or, is it just a constant?
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    Difference Between these

    ... Thats what I have been telling him Himanshu.....I is a more convenient notation for Integers.... Sridhar
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    Difference Between these

    ... Doesn't Z denote a Complex functions??? I personally feel that using Ifor the set of integers is more convinient than using any other alphabet. Sridhar
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    A wave in two different strings

    or you can look at the problem like this... Total Energy is conserved in both the regions of the rope. Thus, consider the wave from the lighter density rope as the incident wave. When this incident wave meets the higher density rope, a part of it gets reflected and a part of it gets...
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    Permanent Magnet Pump Speed Control

    ... Could you brief me about ur device so that I can try to figure out some way of reducing the frequency.? How does your pump work? Sridhar
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    Uniform circular motion question

    .... As u said you must substitute 1/4\Pi\epsilon_{0} = 8.99 * 10^9 in the numerator. i.e. 8.99*10^9 * (e^{2})/r = 1/2 * mv^2 Sridhar
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    Uniform circular motion question

    ... What you should do is equate the electric potential energy to the kinetic energy of the electron...Thats all that you need to do and lo behold you have the answer. i.e. (e^2)/(4\Pi \epsilon_{0}r) = 1/2*(mv^2 ) From the above equation you can find the velocity... Sridhar
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    Integral help

    ... Take 6 as 4 * 1.5 and put (1-2t^2) = u so that 4tdt becomes du. Then you can proceed normally. The integral now contains 1.5*u^{-1/2}du. Sridhar
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    Magnetic Energy

    No they are not less magnetic....The Total energy is always conserved. Sridhar
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    Big bang worries

    Are you asking me that if whe are able to look at the (lets go by ur words)THE BIG BANG, then why aren't we able to look into the past??? Is this the question??? Well if this is the question, then heres ur answer, What we are looking is not past itself, but, a late viewing of the past because...
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    Calculate the magnitude of this torque

    Heres how u do it... Since the mass of the bridge is concentrated at its centre, you can assume this to be a problem where the bridge is a single mass (do not consider length initially) connected to a rope making an angle of 30 degrees to the horizantal with a mass of 110 kg connected to the...
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    Big bang worries

    ... The Concept of Space and Time "evolved" only after the Big Bang and I think that it is wrong to say that we should be seeing Big Bang. Everything evolved only from the Big Bang including the photons of light. Thus leaving the instant of creation we are seeing evrything else. The Cosmic...
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    Magnetic Energy

    .... The energy comes from the potential energy stored in the field. Sridhar
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    Classical Electrostatics problem

    .. when a charge is kept at some distance from the sphere, the electric field would act on the sphere. This electric field is going to induce charges of opposite polarity on the charge. Now any spherical charge distribution will act like a point charge. Thus, equate the electric field due to a...
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    Work/energy related

    ... Heres how u do the problem... \int dw = \int_{x_{1}}^{x_{2}} F.dx; where F is the force and is equal to m*a, where m is the mass and a is the accln. To find the work done by the force in 1st 4.4 seconds you will have to do this: x = a + bt + dt^2 + et^3 . Therefore: dx =...
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    Question about infinity

    There is a limit to how much we can measure. In fixing this limit we also fix our approximations. When there are infinites of nine we say that it is very close to one and hence approximate it to 1. We could approximate 0.999999999999999999999999999999999999999999999... to 0.9, but...
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    Speed of Light?

    ... you say that "Yes light is slowed down by the medium as percieved by us at the macro level - However what actually happens is like .....(the previous explanation given that the apparent slowing of light due to delayed transmission of light through the medium) " Sridhar
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    Help! can someone differentiate e^(nx)

    Well the proof is very big, so i just give u an idea as to how to go abt proving: d(e^{(nx)})/dx = ne^{nx} now increment y by a small value such that: y + \Delta y = e^{(n(x + \Delta x))} Divide the whole term by y such that: (\Delta y)/y = [[e^{(n(x + \Delta x))}]/(e^{(nx)})]...
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    Speed of Light?

    The speed of light is always a constant irrespective of the frame of reference or medium. The apparent slowing down of light due to refraction is due to the fact that the atoms inside the medium absorb the light and then emit the light after some time delay. This time delay in the transmission...
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