Recent content by eldred

Ah yes! The question I've posted is a sub-question to a larger problem. I was also given this info: The power absorbed by the photo-cathode is Pc = 0.540 W, but only 0.2% of this incident energy is effective in producing photoelectrons. I have no clue how i didn't realize the rate of emission is...

Homework Statement Find the speed, v, which an electron, emitted with kinetic energy W = 0.200 eV, arrives at the anode when the accelerating voltage between the anode and the cathode is U = 2.00 V. b) The value I of the photoelectric current Homework Equations From what i gather, Etotal =...

Yep I had posted in the wrong forum. Thanks!

Why, at the center of a black hole, does the need to be a point where space-time curvature is infinite? I understand that black holes scale with consumed matter, and that the point has 0 density but how do we get infinite G? I'm just an amateur but because this might just be a mathematical...