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  1. J

    Earth System Science & Environmental Engineering

    Hey everyone! First of all, Happy Holidays... Now I'm still unsure about my major at all.. I'm currently studying EE at City College of New York... As you know more engineering major you start with your general courses, liberal arts and electives... I did all my sciences, math and...
  2. J

    How to find the Dielectric Strength

    It was actually in my exam a few years ago.. i solved the problem in class tho... i don't remember the answer, but the equation given here was very useful... :)
  3. J

    Beginer book

    Look for "Physics for Scientists and engineerings" 6th edition.. there are two volumes to this those books are really good.. the cover is blue
  4. J

    Integration Problem

    OK thanks so much for your help!
  5. J

    Integration Problem

    How would i type that in maple? f:=sin(x)^3*cos(y)? or f:=sin^3(x)*cos(y)? anyways i pulled the cos(y) out of the integral, then change sin^3(x) to sin(x)*(1-cos^2(x))... i think that led me to sin(x)-cos^2(x)*sin(x) so integrate sin(x)= cos(x) minus integration of cos^2(x)*sin(x)...
  6. J

    Integration Problem

    f:=sin^3(x)*cos(y); Integrate f with respect to x.... from y to Pi/2
  7. J

    Integration Problem

    Homework Statement f:=sin^3(x)cos(y) Integrate f, from x=y....pi/2) Homework Equations I can do it if the two letters were y... But i have no idea how to solve when they are combined..
  8. J

    How to find the Dielectric Strength

    ok i did the calculation Eo = 8.85 x10^-12 A= 8.1x10^-3 d = 2.9x10^-4 so the final answer is C = 2.4719x10^-10 Now what should i do?
  9. J

    How to find the Dielectric Strength

    The full question is like this: The square plates of a 9000pF capacitor measure 90mm by 90mm and are separated by a dielectric which is 0.29mm thick. The voltage rating of the capacitor is 300V. THe dielectric strength, in KV/m is closest to: A. 1300 B. 930 C. 1200 D. 1100 E. 1000 To...
  10. J

    How to find the Dielectric Strength

    Hello, everyone! I have a question, and i don't know how to solve it... They ask me for the dielectric strength! How do i find it?
  11. J

    Electric Field lines problem

    Thanks for your Help! I really appreciate it
  12. J

    Electric Field lines problem

    can anyone give me a hint?
  13. J

    I'm really bad at English!

    My accent is well noticed! but i try my best when speaking and writing..
  14. J

    Electric Field lines problem

    Hello Everyone! i need some guide and hints about this... Here is the link for the picture... From the figure, the electric Field lines arising from two charges Q1 and Q2 are shown. From this drawing we can see that A) The electric field could be zero at P2 B) Both Q1 and Q2 have the...
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