Hi, I need some help with this homework from my Electromagnetism course. I hope this is the correct place to post this. (Please excuse any potential english mistake I made trying to translate this). Problem 1: Copper (conductor) sphere of radious R with an spheric bubble inside placed at distance c from the center, with radius b. The metalic sphere has charge Q. 1.-Find the electric potential inside the bubble 2.-Is the result modified if the bubble is not a sphere? Problem 2: 1.-Explain what a monochromatic plane wave is, identify the dirction of propagation, the velocity of propagation, wave lenght and polarization. 2.- In the case of plane electromagnetic waves, probe E and B fields are perpendicular between each other. and perpendicular to the direction of propagation.