Essential University Physics
Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
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Chapter 35.2, Problem 35.2GI
To determine

Probabilities of a finding a particle in small regions of width dx .

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A 3.0 MeV proton is incident on a potential energy barrier of thickness 10 fm and height 10 MeV.What are (a) the transmission coefficient T, (b) the kinetic energy Kt the proton will have on the other side of the barrier if it tunnels through the barrier, and (c) the kinetic energy Kr it will have if it reflects from the barrier? A 3.0 MeV deuteron (the same charge but twice the mass as a proton) is incident on the same barrier.What are (d) T, (e) Kt, and (f) Kr?
A horizontal beam of laser light of wavelength is 585 nm passes through a narrow slit that has width 0.0602mm. The intensity of the light is measured on a vertical screen that is 2.00 m from the slit. (a) What is the minimum uncertainty in the vertical component of the momentum of each proton in the bean after the photon has passed through thr slit? What is the width of the central maximum and the intensity in terms of I0 at the first minimum? (b) If these photons scatters off an electron at rest at an angle of 15 degrees, what is the photon's final energy? (c) If these photons strike a metal surface with work function 2.2eV, what would be the maximum kinetic energy of the emitted electrons?
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