HW3 - higher energies a particle can have? (b) Is 30 eV an...

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Chapter 3 Homework Problems 1. (book #3) 2. (book #4) 3. a) Find the de Broglie wavelength of a 1.00 keV proton. Is a relativistic calculation needed? B) Find the de Broglie wavelength of a 1.00 GeV proton. Is a relativistic calculation needed? 4. (book #9) 5. (book #16) 6. Find the phase and group velocities of the de Broglie waves of an electron whose kinetic enrgy is 50 keV. 7. The lowest possible energy for a certain positively charged particle trapped in a box is 2.00 eV. (a) What are the next two
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Unformatted text preview: higher energies a particle can have? (b) Is 30 eV an allowed energy? (c) Is 32 eV an allowed energy? (d) Given the box length is 0.434 nm, what is the mass of the particle? (e) What do you think the particle is? 8. What is the uncertainty in velocity of an electron trapped in a 1.00 nm length box? Repeat for a proton. 9. An electron has a speed of 10.0 km/s. How much time is needed to measure its kinetic energy with an uncertainty of 0.100 percent? How far will it travel in this time?...
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This note was uploaded on 10/21/2009 for the course PHYS PHYS 3313 taught by Professor Andrewbrandt during the Fall '09 term at UT Arlington.

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