PHYS 202 Midterm: PHYS 202 TAMU 202s10 Exam 4
Document Summary
Note: the speed of light in air is c = 3. 00 x 108 rn/s. No work need be shown and no partial credit will be given. (6 pts) 1. The nucleus 190 undergoes 3 there in the daughter nucleus produced by this decay? (beta-minus) decay. How many neutrons are (a) 19 (b) 11 (c) 10 (d) 9 (e) 8 (f) 7 (g) 12 (h) none of the above answers (6 pts) 2. A state of a hydrogen atom has energy e = 1. 51 ev. When light of wavelength ? is incident on a metal surface, photoelectrons with maximum kinetic energy kmax are produced. If the wavelength of the light is decreased while the intensity of the light is kept constant, the maximum kinetic energy of the photoelectrons (a) decreases (b) increases (c) stays the same (6 pts) 4. A photon has energy e0 and momentum p0.
