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Prashan_punk

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Everything posted by Prashan_punk

  1. does (x+h)log(x+h) = xlog(x+h) + hlog(x+h) ?
  2. Prashan_punk

    why's it?

    why's diffraction grating better than double slit experiment for finding wavelength of a wave
  3. thanks guys...but i have trouble understandin the expression for the magnetic field intensity i.e B = F/m where 'B' is magnetic field intensity, F is force experienced by The unit pole and 'm' is the strength of another magnet... just confused how this relation came
  4. does it mean the north magnetic pole of a magnet of +1 strength?
  5. the intensity of magnetic field at a point is defined as the force experienced by a unit north pole placed at that point . WHat does unit north pole mean ???
  6. why does spectrum of hydrogen have many lines though it has only one electron???
  7. when the image forms at infinity how can we proove M= D/F M= MAGNIFICATION D= LEAST DISTANCE OF DISTINCT VISION F= FOCAL LENGTH
  8. i have prob understandin the following proof......... IN THE CASE OF SIMPLE MICROSCOPE IF IMAGE FORMS IN INFINITY THEN HOW CAN WE PROOVE= MAGNIFICATION(m) = D/f where 'D' IS LEASE DISTANCE OF DISTINCT VISION AND F = FOCAL LENGTH
  9. sorry guys about some mistake ....but i am still confuse in this binomial expansion.....can u explain that part =>HOW IS C(n,2)x^2 = (n(n-1))/2!) OR C(n,3)x^3 = (n(n-1)(n-2))/(3!) of this equation....
  10. CAN ANY ONE PROVE THIS? ( n! ) /( r! (n-r)! ) = ( n(n-1) )/ 2!
  11. Can somebody describe BINOMIAL THEOREM in a effective way....ABout the its "general term", "middle term" ...........thanks to anyone who will describe it
  12. See The Fig.txt File Fig.txt
  13. THanks guys...for the help......i may post some other questions ....coz i need to get prepared for examx
  14. Find the derivatives of : 1. log x/10 2. e^(ax+b) 3. e^(x/3)
  15. If i would have the other fuels i.e. Gunpowder....I would not have searched for phosphorus
  16. In some of the websites I found some of the rockets that were made of phosphorus.....Can i make rockets using phosphorus too??
  17. A man having HIV disease....Came in the group of 1245454 people He had a syringe filled with his warm blood..... He tried to inject the blood to other people but he could not... He tried and tried and finally he transferred his blood in a doctor The man laughed and said"Ha ha, now you will die of AIDS" Doctor also laughed The man said why are u laughing... Doctor said---"B'COZ I'M WEARING A CONDUM!!!"
  18. How can i levitate a magnet?
  19. ..... Thanx guys but I want to try it...in the battery cover... Would it explode if it fails..............
  20. You should try mobile phone tools
  21. I suggest you not have a laptop to play computer games You should have at least:- 2 gig ram or 1 gig 3.0 ghz processor a good graphics card like:- Radeon 9800 pro Radeon x1900 is the latest and finest nvidia 6800 ultra The latest nvidia 7800 gtx will be better
  22. Prashan_punk

    Rockets

    Hello everyone I am new in here I have some problems in making the solid fueled small rockets I cant find the proper chemical like KNO3......Can i use the burning material of a matchstick??? And whatelse can i do to make it????
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