TB_chapter29 - Chapter 29, Nuclear Physics CHAPTER 29...

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Chapter 29, Nuclear Physics C HAPTER 29 Conceptual Questions C1. Sample #1 is made from an isotope with decay constant 1 λ and sample #2 is made from an isotope with decay constant 2 , where 2 1 < . Which of the following statements must be true? a. The activity of sample #1 is greater than that of sample #2. b. The activity of sample #2 is greater than that of sample #1. c. The half-life exhibited for sample #1 is greater than that of sample #2. d. The half-life exhibited for sample #2 is greater than that for sample #1 C2. Two different nuclei emit alpha particles, the energy released in each of these decays being the same. Which of the following has the highest resulting kinetic energy? a. The lighter daughter nucleus. b. The heavier daughter nucleus. c. The alpha particle from the lighter nucleus. d. The alpha particle from the heavier nucleus. C3. A particle is fired at a target nucleus in which a reaction that could occur has a negative Q value. Which of the following statements is true? a. The kinetic energy of the bombarding particle can be any amount for the reaction to occur. b. The kinetic energy of the bombarding particle must be equal to the absolute value of the Q value for the reaction to occur. c. The kinetic energy of the bombarding particle was greater than the absolute value of the Q value if the reaction occurred. d. The Q value has nothing to do with whether or not the reaction can occur. C4. The isotope 14 C cannot be used in dating old samples of which of the following? a. charcoal from a fire b. a bronze implement from a cave c. a bone buried in mud d. All of the above can be dated using 14 C. C5. Which of the following is not true for both the photon and the neutrino. a. Both are uncharged. b. Both have spin . c. Both can carry different amounts of momentum. d. Choose this answer if all of the above are true. 237
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Chapter 29, Nuclear Physics 29.1 Some Properties of Nuclei 1. The nucleus of an atom is made up of which of the following? a. electrons and protons b. electrons and neutrons c. protons, electrons and neutrons d. protons and neutrons 2. The experiment, which gave the first evidence for the existence of the atomic nucleus, involved which of the following? a. x-ray scattering b. radioactive dating c. cosmic ray detection d. alpha scattering 3. The atomic number of a given element is equivalent to which of the following? a. proton number in the nucleus b. neutron number in the nucleus c. sum of the protons and neutrons in the nucleus d. number of electrons in the outer shells 4. Rutherford’s experiments involving the use of alpha particle beams directed onto thin metal foils demonstrated the existence of which of the following? a. neutron
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This note was uploaded on 01/06/2012 for the course PHYS 201 taught by Professor Coffin during the Spring '09 term at Oregon State.

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TB_chapter29 - Chapter 29, Nuclear Physics CHAPTER 29...

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