PHYSICS F/SCI.+ENGRS.,STAND.-W/ACCESS
6th Edition
ISBN: 9781429206099
Author: Tipler
Publisher: MAC HIGHER
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Chapter 34, Problem 39P
To determine
The wavelength of electrons.
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Electrons with energy of 40 keV are used in electron microscopes. What is the de Broglie wavelength of such electrons?
(a) A hydrogen atom has its electron in the
n = 6
level. The radius of the electron's orbit in the Bohr model is 1.905 nm. Find the de Broglie wavelength of the electron under these circumstances.___________ m(b) What is the momentum, mv, of the electron in its orbit? ________kg-m/s
A neutron of mass m = 1.67 x 10-27 Kg is moving with a speed of 5.0 m/s. Find its De Broglie wavelength.
Group of answer choices
395 nm
162 nm
219 nm
79 nm
Chapter 34 Solutions
PHYSICS F/SCI.+ENGRS.,STAND.-W/ACCESS
Ch. 34 - Prob. 1PCh. 34 - Prob. 2PCh. 34 - Prob. 3PCh. 34 - Prob. 4PCh. 34 - Prob. 5PCh. 34 - Prob. 6PCh. 34 - Prob. 7PCh. 34 - Prob. 8PCh. 34 - Prob. 9PCh. 34 - Prob. 10P
Ch. 34 - Prob. 11PCh. 34 - Prob. 12PCh. 34 - Prob. 13PCh. 34 - Prob. 14PCh. 34 - Prob. 15PCh. 34 - Prob. 16PCh. 34 - Prob. 17PCh. 34 - Prob. 18PCh. 34 - Prob. 19PCh. 34 - Prob. 20PCh. 34 - Prob. 21PCh. 34 - Prob. 22PCh. 34 - Prob. 23PCh. 34 - Prob. 24PCh. 34 - Prob. 25PCh. 34 - Prob. 26PCh. 34 - Prob. 27PCh. 34 - Prob. 28PCh. 34 - Prob. 29PCh. 34 - Prob. 30PCh. 34 - Prob. 31PCh. 34 - Prob. 32PCh. 34 - Prob. 33PCh. 34 - Prob. 34PCh. 34 - Prob. 35PCh. 34 - Prob. 36PCh. 34 - Prob. 37PCh. 34 - Prob. 38PCh. 34 - Prob. 39PCh. 34 - Prob. 40PCh. 34 - Prob. 41PCh. 34 - Prob. 42PCh. 34 - Prob. 43PCh. 34 - Prob. 44PCh. 34 - Prob. 45PCh. 34 - Prob. 46PCh. 34 - Prob. 47PCh. 34 - Prob. 48PCh. 34 - Prob. 49PCh. 34 - Prob. 50PCh. 34 - Prob. 51PCh. 34 - Prob. 52PCh. 34 - Prob. 53PCh. 34 - Prob. 54PCh. 34 - Prob. 55PCh. 34 - Prob. 56PCh. 34 - Prob. 57PCh. 34 - Prob. 58PCh. 34 - Prob. 59PCh. 34 - Prob. 60PCh. 34 - Prob. 61PCh. 34 - Prob. 62PCh. 34 - Prob. 63PCh. 34 - Prob. 64PCh. 34 - Prob. 65PCh. 34 - Prob. 66PCh. 34 - Prob. 67PCh. 34 - Prob. 68PCh. 34 - Prob. 69PCh. 34 - Prob. 70PCh. 34 - Prob. 71PCh. 34 - Prob. 72PCh. 34 - Prob. 73P
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- At what velocity will an electron have a wavelength of 1.00 m?arrow_forwardWhat is the de Brogue wavelength of a proton whose kinetic energy is 2.0 MeV? 10.0 MeV?arrow_forwardThe work function for potassium is 2.26 eV. What is the cutoff frequency when this metal is used as photoelectrode? What is the stopping potential when for the emitted electrons when this photo electrode is exposed to radiation of frequency 1200 THz?arrow_forward
- An X-ray tube has an applied voltage of 100 kV. (a) What is the most energetic X-ray photon it can produce? Express your answer in electron volts and joules. (b) Find the wavelength of such an X-ray.arrow_forwardWhat is the kinetic energy of a 0.01-nm electron in a TEM?arrow_forwardThe de Brogue wavelength of a neutron is 0.01 nm. What is the speed and energy of this neutron?arrow_forward
- What is the de Brogue wavelength of an electron that is accelerated from rest through a potential difference of 20 keV?arrow_forwardIn the typical X-ray lamp the electrons are accelerated in the potential difference of 10,100 V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp. State your answer in 1010 m and round it to the nearest thousandth. For example, if you get 1.2453 × 10-10 m, you type in 1.245. Take h=6.626x10-34 J s; 1e =1.6x10-19C; c=3x10®m/s.arrow_forwardThe interatomic spacing in a particular crystal is 0.266 nm. This crystal is being studied in a neutron diffraction experiment. How fast must a neutron (mass = 1.67 × 10-27 kg) be moving in order to have a de Broglie wavelength of 0.266 nm? Number Units Atomic structure of a crystal Atomsarrow_forward
- An electron has a kinetic energy of 3.00 eV. Find its wavelength.arrow_forwardIn an x-ray tube, electrons are accelerated through a large voltage and then slammed into a target. This causes the electrons to lose their energy very rapidly. The energy lost from the electron is converted into x-rays. What is the accelerating voltage of an x-ray tube that produces a spectrum of x-rays where the shortest wavelength is 0.017 nm ?arrow_forwardSee attached.arrow_forward
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