Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 10, Problem 19P
To determine
Energy of the x-ray photons.
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An X-ray photon with a wavelength of 0.999 nmnm strikes a surface. The emitted electron has a kinetic energy of 990 eV.
What is the binding energy of the electron in kJ/molkJ/mol? [Note that KEKE = 12mv212mv2 and 1 electron volt (eVeV) = 1.602×10−19J1.602×10−19J.]
Express your answer using three significant figures.
Lead has a prominent x - ray emission line at 75.0 keV. (a) What is the minimum speed of an incident electron that could produce this emission line? (b) What is the wavelength of a 75.0 - keV x - ray photon?
What is the minimum wavelength in m of the x-ray photons from a 140 kV x-ray tube?
(h = 6.63x10-34J·s, 1 eV = 1.6x10-19 J, c = 3.0x108 m/s)
Select one:
a. 8.9e-12 m
b. 4.5e-39 m
c. 8.9e-9 m
d. 1.1e11 m
Chapter 10 Solutions
Inquiry into Physics
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