PHYS 102 Midterm: PHYS 102 University of Rochester P102 2009F Exam 2 Solutionss
Document Summary
Please read the problems carefully and answer them in the space provided. Exam 2 (november 23, 2009) the back of the page, if necessary. Problem 1 (4 pts, no need to show work): Higher energy photons have (relative to lower energy photons) longer wavelengths: greater speed, higher frequency, all of the above, none of the above. Problem 2 (4 pts, no need to show work): In the standard model of particle physics there are how many distinct types of quarks: 2, 4, 6, just over 100, there are no quarks in the standard model. Problem 3 (4 pts, no need to show work): Problem 4 (4 pts, no need to show work): Roughly how many chemical compounds exist in nature: 6, 25, just over 100, just over 500, a very large number, much greater than 500. Problem 5 (4 pts, no need to show work): An atom has four distinct energy levels that can be occupied by an electron.
