Modern Physics for Scientists and Engineers
4th Edition
ISBN: 9781133103721
Author: Stephen T. Thornton, Andrew Rex
Publisher: Cengage Learning
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Chapter 4, Problem 10P
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Whether the experiment of students will work without modifying the detector if the other angle they want to measure is 6°.
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1. In an experiment done by scattering 7.7-MeV a particles from a thin gold foil, experimenters find that 5,000
a particles are scattered at an angle greater than 50°. (a) How many of these a particles will be scattered at
an angle greater than 90°? (b) How many will be scattered between 70° and 80°?
A 20.0-kg particle has a deBroglie wavelength of 10.0 cm. How fast is the particle moving?A. 1.30 x 10-34 m/sB. 2.64 x 10-34 m/sC. 3.31 x 10-34 m/sD. 3.98 x 10-34 m/sE. 4.40 x 10-34 m/s
A 20 MeV alpha particle is fired toward a 238U nucleus. It follows the path as shown. What is the alpha particle’s speed when it is closest to the nucleus, 20 fm from its center? Assume that the nucleus doesn’t move.
Chapter 4 Solutions
Modern Physics for Scientists and Engineers
Ch. 4 - Prob. 1QCh. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 4QCh. 4 - Prob. 5QCh. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Prob. 8QCh. 4 - Prob. 9QCh. 4 - Prob. 10Q
Ch. 4 - Prob. 11QCh. 4 - Prob. 12QCh. 4 - Prob. 13QCh. 4 - Prob. 2PCh. 4 - Prob. 3PCh. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - What fraction of 5-MeV α particles will be...Ch. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19PCh. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - Prob. 57PCh. 4 - Prob. 59PCh. 4 - Prob. 60PCh. 4 - Prob. 61P
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- X-rays with an energy of 400 keV undergo Compton scattering from a target. The scattered rays are deflected at an angle of 32.0° relative to the direction of the incident rays. What is the energy of the scattered x-rays? a. 3.58E+2 keV b. 4.00E+2 keV c. 3.37E+3 keV d. 3.23E+2 keVarrow_forwardAlpha particles of kinetic energy 5.4 MeV are incident at a rate of 3.2 x 107 per second on a copper foil of thickness 3.2 x 10-6 m. A circular detector of diameter 1.0 cm is placed 13 cm from the foil at an angle of 30° with the direction of the incident alpha particles. At what rate does the detector measure scattered alpha particles? (The molar mass of copper is 63.5 g/mol and its density is 8.9 g/cm³.) Additional Materials Bookarrow_forwardCalculate the de Broglie wavelength (in fm) of a 5.8 MeV a particle emitted from an atomic nucleus whose diameter is approximately 1.6 × 10¯14, fm Calculate its minimum kinetic energy (in keV) according to the uncertainty principle. keV Could this particle exist inside the nucleus? Yes No Explain. m.arrow_forward
- Protons are accelerated from rest by a potential difference of 3.80 kVkV and strike a metal target. A) If a proton produces one photon on impact, what is the minimum wavelength of the resulting xx rays? Express your answer in meters. B) Find the minimum wavelength if 3.80 −keV−keV electrons are used instead? Express your answer in meters.arrow_forwardPhotoelectrons from a material with a binding energy of 2.71 eV are ejected by420-nm photons. Once ejected, how long does it take these electrons to travel 2.50cm to a detection device?C. The heating element in an electric kettle is rated as 2.0 kW. If the water in the kettleis at 100.0 °C, what volume of water will be converted into steam in one minute?The specific latent heat of vaporization of the water is 2,257,000J\Kg and thedensity of water is 1,000 kg/m3.arrow_forwardProblem 9: Rutherford Scattering A gold foil (5.9×1022 atoms/cm³) of "hair" thickness 80 µm is used in a Rutherford experiment to scatter a particles with energy 5 MeV. Find the fraction of particles scattered at angles 0 > 30°.arrow_forward
- When an alpha particle collides elastically with a nucleus, the nucleus recoils. Suppose a 6.00 MeV alpha particle has a head-on elastic collision with a silver-108 nucleus that is initially at rest. (a) What is the kinetic energy of the recoiling nucleus? MeV (b) What is the kinetic energy of the rebounding alpha particle? MeVarrow_forwardRadius of an atomic nucleus is of the order 2.2 fm. What is the minimum energy that an electron should have to be found inside the atomic nucleus? Is this possible in reality? Explain.arrow_forward2.8 pm photons interact with free electrons from a carbon target. what will be the energy minimum that photons will be able to emerge from such a scenario?arrow_forward
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