Recent content by jezse

I have two questions.. any insight into either of them is appreciated. 1) A fair coin is tossed repeatedly; the sequence of outcomes is recorded. Let Y be the random time of the first appearance of HT (a tail immediately following a head). (a) Find P(Y = 4): (b) Find E[Y] (the expected...

magnetic flux density B for an infinitely long cylindrical conductor of radius b is know: inside: B = (Mu*R*I)/(2*pi*b^2), R<b outside: B = (Mu*I)/(2*pi*R^2), R>=b I need to determine the vector magnetic potential A using only the relation B = curl A (del X A)

I know I have to prove this using induction, but am having some problems. show n! > n^2 for all n >= 4 what I have so far 1) n=4; 4^2=16 < 4! = 4*3*2*1=24; 16 < 24 2) show (n+1)! > (n+1)^2 something a long the lines of.. (n+1)! = (n+1)*n! > (n+1)*n^2 .. then...

sorry new to the board, didn't realize there was a HW section. thanks for your help.

please help me study by answering a few questions. consider a hydrogen atom with energy levels En= -(13 eV)/(n^2) this atom is bombarded by photons of E = 15 eV. What is the incoming photon frequency? What are possible kinetic energies and speeds of the emerging electrons? What is...