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pulkit

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Everything posted by pulkit

  1. pulkit

    Cell Phones

    It is mostly adviced to switch of your cell phones at refill stations. (I have seen it being discouraged in newspaper adverts) I don't believe its a myth.
  2. I have 12GB of mp3's downloaded from the net and ripped off cds. So I steal.
  3. pulkit

    Cell Phones

    The difference is that you don't need to carry a cord less in your trouser pockets for 10-12 hours a day, reduces the risk exponentially )
  4. Can't agree with you more. I had to use a potentiometer in a circuit, took me some time to procure its data sheets from the net and figure out the leads and their purposes.
  5. Interesting that noone at home objects ! I forgot, what is the concentration (?M) of saturated HCl ??
  6. [MATH]h \rho g + \frac{2 \sigma}{r} =p_{o} [/MATH] h is height of water column [MATH]\rho[/MATH] is water density [MATH]\sigma[/MATH] is surface tension of water r is radius of aperture [MATH]p_{o}[/MATH] is outside pressure (atmospheric pressure) g is acceleration due to gravity Note that critical part is height of column and not total weight of water. Assumpttions : a) Closed bottle b) No air present in bottle (If any then it has negligible pressure)
  7. pulkit

    infinity?

    Of all that you have posted so far, I only agree with the fact that maths is man made. Once you make that statement, the rest of your statements automatically become invalid. You can no longer challenge infinity, now you are in the domain of maths, and must present a mathematical proof to support each and every one of your claims.
  8. Or more simply [MATH] \vec{v}=\frac{d\vec{r}}{dt}[/MATH]
  9. When you get your potentiometer, be careful in the way you attach it. It would typically have 3 leads, 1 is common, 1 is adjustable the third is set to maximum resistance. Be sure not to use the lead which is already set to maximum, otherwise you'll defeat the purpose of the potentiometer.
  10. I had massive problems in configuring my zone alarm with my connection type. So finally I decided to get rid of it and installed this very nice freeware called Sygate Personal Firewall. It works perfectly well, ever since I installed it I have had no virus attacks. Plus it has no conflict issues with any software.
  11. You do all those calculations only if you want to use a resistance in the circuit, with a potentiometer, you just set up a voltage measuring device across your bulb and adjust your potentiometer till the voltage comes to 18V
  12. Another nice way to appreciate difference between speed and velocity, is to analyse a particle moving in a circle with a constant speed v. Even though speed remains the same, the velocity constantly varies due to direction change.
  13. The velocity is the derivative with respect to time of displacement. Wht you mentioned is average velocity not instantaneous velocity.
  14. True. I must acept that I am wrong.
  15. I have a right eye dominance though my left eye is stronger (and it always has been since I got spectacles). Even I would have liked to believe there was some sort of connection between the two )
  16. Only stuff that gets close (i use this in a relative sense) to the speed of light are sub atomic particles not cyclones
  17. No nothing goes above the speed of light. Your friend is just kidding you, or he/she doesn't know themselves.
  18. Proving it by induction may be slightly easier than actually trying to work it out from scratch.
  19. Very tough question...... Seventh son of a seventh son by maiden Maglanomania by incubus Lake of fire by nirvana prbably 3 of the top 10 for me.
  20. Any ideas when linkin park might come out with a fourth album ?
  21. An empirical formula has been put forward for :- a) Minimum price b) Minimum increment c) Generation of next price All three resuls being empirical do not carry any proof yet. The result in part © (look at post #22) explains how to ensure positive nos of each stamp (By taking mod it ensures positive nos).
  22. pulkit

    Cell Phones

    I thought about stoppping to use it, but then I use my cellphone a lot more than my land line, so I can't give it up (
  23. pulkit

    Sayo

    lol It went down from 4 digits to 2 digits ??
  24. The bottle does not leak because the surface tension of the water bubble formed at the aperture is greater than the weight of the liquid column above. If you were to take a constant hole size and keep increasing your bottle content, it will eventually leak. To get the critical hole size, merely equate the forces at the hole interface
  25. Though concentrated HCl and sulphuric acid don't cause too many storage problems. They can be bottled up if you wish to do so. Thtas why they are stored in high concentrations. One chemical that is notoriously hard to handle is ammonia, generally labs would store that in fume cabinets, which is why often you don't get too much conc NH3 in school labs.
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