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ahmed sobhy

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Everything posted by ahmed sobhy

  1. no I didn't. How can I do it using the c++?
  2. it is c++ , can you help with the code ?
  3. I am trying to generate a random number between i and j. The code at the bottom always generates the same number which is 42. How can I fix this ? int RandInt (int i , int j) { return rand( ) % (j-i+1) + i ; }
  4. Lim x--> infinity (2x/x+1)^5 Can I get the limit into the brackets , apply l'hopital rule and the result ^5? Then the answer is 2^5 ?
  5. what is the limit of a^n as n reaches infinity if a <-1, and WHY ?
  6. How to get the magnetic field in the centre of a squared wired of length L ?
  7. studying for the final
  8. Can u help with this problem? A charged particle of mass 1.50 g is moving at a speed of 1.50 3 104 m/s. Suddenly, a uniform magnetic field of magnitude 0.150 mT in a direction perpendicular to the particle's velocity is turned on and then turned off in a time interval of 1.00 s. During this time interval, the magnitude and direction of the velocity of the particle undergo a negligible change, but the particle moves by a distance of 0.150 m in a direction perpendicular r to the velocity. Find the charge on the particle. I know that qvb=ma The only unknown to get q is a. How to get it ? Also I am confused, of how it is mentioned that change of velocity is negligible and there is acceleration ? shouldn't a be zero ?
  9. Why is SF5 polar, while PF5 is non polar ?
  10. What is the effect on a moving charge particle as the magnetic field become more intensified. The reason I am asking that I read in a book that the magnetic field only have effect only on changing the direction of a moving charged particle and doesn't affect its speed.
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