Recent content by physicsNYC

Homework Statement H = {(x,y,z) \in R^3 | x + y^2 + z = 0} \subseteq R^3 T = {A \in M2,2 | AT = A} \subseteq M2,2 The Attempt at a Solution Our lecturer wasn't quite clear about how to go about this. He talked out closed under addition and multiplication but that's about it...

Homework Statement Couple of questions State the De Broglie Wavelength for electrons with an energy of 50eV and the following is a picture is a diagram of the energy levels in Fe: http://www.freeimagehosting.net/image.php?eeddf8b465.jpg What is the energy required to ionise Fe in in...