PH214_2007SPRING_EXAM3_PROFSOLN_[0]

PH214_2007SPRING_EXAM3_PROFSOLN_[0] - Ph 214, Spring 2007...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Ph 214, Spring 2007 Exam # 3 Multiple Choice Name: (no name, no score !) Multiple Choice Answer Sheet # Answer 1, 2. 3. 4. 5. 6. 7, 8. 9, 10. 11. 12. 13. 14. 15, 16. 17. Subtotal /85 1 Ph 214, Spring 2007 Exam # 3 Multiple Choice Name: (no name, no score !) 1. [5 pts] A particle with the spatial wave function ( x ) = Ae ikx = A [cos kx + i sin kx ], where A and k are constants, can be thought of as a plane wave traveling along the x-axis. Which of the following statements most accurately describes the probability of finding the particle at any location along the x-axis? (A) It is equally likely to find the particle anywhere along the x-axis. 2. [5 pts] The positronium atom consists of an electron and a positron bound together by their mutual Coulomb attraction and moving about their center of mass, which is located halfway between them. Thus the positronium atom is somewhat analogous to a hydrogen atom. The ground-state of hydrogen is 13.6 electron volts. What is the ground-state binding energy of positronium? (B) 1 2 13 . 6 eV 3. [5 pts] Two coherent sources of visible monochromatic light form an interference pattern on a screen. If the relative phase of the sources is varied from 0 to 2 at a frequency of 500 Hz, which of the following best describes the effect, if any, on the interference pattern? (E) It is not destroyed but simply shifts positions at a rate too rapid to be detected by the eye. Questions 4 and 5 : A particle with rest mass m and momentum mc/ 2 collides with a particle of the same rest mass that is initially at rest. After the collision, the original two particles have disappeared. Two other particles, each with rest mass m...
View Full Document

This note was uploaded on 02/27/2012 for the course CHEMISTRY/ CH/ECE/PH/ taught by Professor Faculty during the Spring '08 term at Cooper Union.

Page1 / 7

PH214_2007SPRING_EXAM3_PROFSOLN_[0] - Ph 214, Spring 2007...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online