(1) Alpha particles of kinetic energy 6.250 MeV are scattered at 90° by a gold foil.(a) What is the impact parameter?(b) What is the minimum distance between the alpha particles and the gold nucleus?(c) Find the kinetic and potential energies at that minimum distance.

Step 1: Step 2: Step 3: Step 4:

Answered: (1) Alpha particles of kinetic energy…

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter14: Nuclear Physics Applications

Section: Chapter Questions

Problem 38P

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(a) An aspiring physicist wants to build a scale model of a hydrogen atom for her science fair project. If the atom is 1.00 m in diameter, how big should she try to make the nucleus? (b) How easy will this be to do?
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(a) Calculate the energy released in the a decay of 238U . (b) What fraction of the mass of a single 238U is destroyed in the decay? The mass of 234Th is 234.043593 u. (c) Although the fractional mass loss is large for a single nucleus, it is difficult to observe for an entire macroscopic sample of uranium. Why is this?

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(1) Alpha particles of kinetic energy 6.250 MeV are scattered at 90° by a gold foil. (a) What is the impact parameter? (b) What is the minimum distance between the alpha particles and the gold nucleus? (c) Find the kinetic and potential energies at that minimum distance.