PHYS 2040 Study Guide - Midterm Guide: Superpartner, Lewis Carroll, Work Function

• School: York University
• Department: Physics and Astronomy
• Course: PHYS 2040
• Professor: P. Richard

Document Summary

Go on till you come to the end; then stop. lewis carroll: (10 marks) The photon scatters through an angle of 45 . What is the wavelength of the scattered proton: (6 marks) A system of two spacecraft is used to measure the work function of a metal. What is the maximum speed of an ejected electron relative to the metal: (10 marks) Several modern theories of how particles interact use a new concept known as supersymmetry. One of the predictions of these theories is that there are more fundamental particles than are currently observed. In fact, they predict that each of the known particles has a superpartner. Say that the superpartner of the electron (known as the selectron) was discovered and found to have a rest mass of 500. Further, the selectron charge is two thirds that of the electron and of the same sign (i. e. qs=(2/3)e).