Modern Physics
Modern Physics
2nd Edition
ISBN: 9780805303087
Author: Randy Harris
Publisher: Addison Wesley
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Chapter 4, Problem 19E

(a)

To determine

The wavelength of an electron at room temperature.

(b)

To determine

The wavelength of a proton at room temperature.

(c)

To determine

The circumstances under which each particle would behave as a wave.

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a)Suppose a hydrogen molecule in its ground state is dissociated by absorbing a photon of ultraviolet light, causing the two hydrogen atoms to fly apart. What photon energy will give each atom a speed of 19 km/s? The mass of a hydrogen atom is 1.7×10^−27 kg Express your answer to two significant figures and include the appropriate units.
5) What is the magnitude of the wave number k in region I or III in fig. 5.7? Given that U = 10 MeV, E = 5 MeV and the particle is proton (mc² = 938 MeV). A) 3.455 fm¹ B) 2.501 fm¹ C) 0125 fm D) 0.491 fm¹ of the energy (in 6) The magnitude Energy 0 U E 11 E 211
At what temperature T will the kinetic energy of a molecule of a biatomic gas be equal to the energy of a photon with a wavelength of λ = 589 nm?
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