Inquiry into Physics
Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 10, Problem 8Q
To determine

What effect would this have on things such as solar cells, atomic emission and absorption spectra lasers, if the Planck constant became a much large number?

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Calculate the wavelength of electrons accelerated through 1742 V. (electron mass m = 9.1 x 10-31 Kg, electronic charge e=1.6 x 10-19 C and the Planck constant h=6.6 x 10-34 Js) Round off the answer to 2 decimal places and write answers as power of 10.
An atom has its electron in the energy level at - 1.2 eV. It absorbs a photon, which promotes the election to the -0.4 eV level. What is the wavelength (in meter) of this photon. Round off the answer to 2 decimal places with scientific representation.
What is the maximum wavelength for which electrons are released, in nanometers and the frequency of the photons used?

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