Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 10, Problem 23Q
To determine
An electron and a proton are moving with the same velocity which will have the longer de-Broglie wavelength?
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Students have asked these similar questions
A) Accelerate electrons in an electron microscope with 40 kV. What is the smallest distancebetween teorical observed matter?b) calculate the de Broglie wavelength for an electron move with 10^7 m/s velocity. What isthe de Broglie wavelength for a stone with 50 gr mass act with 40 m/s velocity (?).? whichone of the b section’s option is observed with wave nature diffraction techniques? Why?
(Hand by writing ans.)A certain atom has an energy level of 3.50 eV above the ground state. When excited to this state, it remains 4.0µs, on average, before emitting a photon and returning to the ground state.
i) What is the energy of the photon? What is the wavelength of the photon?
ii) What is the smallest possible uncertainty in the energy of the photon?
4,
3.
Excited
Ground
state
1(ground state)
state
4.
4.85E-19 J
4.42E-19 J
3.98E-19 J
3.
1.
3.03E-19 J
2.
1.
1 (ground state)
Energy
Energy
paquosqe
emitted
2) [30] Energy Levels
Above is a schematic of a Hydrogen atom with its first 5 energy levels. On
the right is the energy emitted from the transitions (lines pointing down on
the diagram). Using the knowledge that energy and wavelength are
hc,
connected ( E =) you will figure out the wavelength for each of these
%3D
transitions.
%3D
E.
h = Planck constant = 6.63E-34 J*s
c = speed of light = 3E8 m/s
2 = wavelength in meters
E = energy in Joules (J)
%3D
hc
%3D
E
will be in meters! Divide by 10-9 for nm
If you need help converting this to a color easier, try this website once you
get the wavelength in nm: https://academo.org/demos/wavelength-to-
colour-relationship/
Chapter 10 Solutions
Inquiry into Physics
Ch. 10 - Prob. 1SACh. 10 - Prob. 1OACh. 10 - Prob. 1PIPCh. 10 - Prob. 1MIOCh. 10 - Prob. 2MIOCh. 10 - Prob. 1QCh. 10 - Prob. 2QCh. 10 - Prob. 3QCh. 10 - Prob. 4QCh. 10 - Prob. 5Q
Ch. 10 - Prob. 6QCh. 10 - Prob. 7QCh. 10 - Prob. 8QCh. 10 - Prob. 9QCh. 10 - Prob. 10QCh. 10 - Prob. 11QCh. 10 - (Indicates a review question, which means it...Ch. 10 - Prob. 13QCh. 10 - Prob. 14QCh. 10 - (Indicates a review question, which means it...Ch. 10 - Prob. 16QCh. 10 - Prob. 17QCh. 10 - Prob. 18QCh. 10 - Prob. 19QCh. 10 - Prob. 20QCh. 10 - Prob. 21QCh. 10 - Prob. 22QCh. 10 - Prob. 23QCh. 10 - Prob. 24QCh. 10 - Prob. 25QCh. 10 - Prob. 26QCh. 10 - Prob. 27QCh. 10 - Prob. 28QCh. 10 - Prob. 29QCh. 10 - Prob. 30QCh. 10 - Prob. 31QCh. 10 - Prob. 32QCh. 10 - Prob. 33QCh. 10 - Prob. 34QCh. 10 - Prob. 35QCh. 10 - Prob. 36QCh. 10 - Prob. 37QCh. 10 - Prob. 38QCh. 10 - Prob. 39QCh. 10 - Prob. 40QCh. 10 - Prob. 41QCh. 10 - Prob. 42QCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - . Figure 10.47 is the energy-level diagram for a...Ch. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 1CCh. 10 - Prob. 2CCh. 10 - The rate at which solar wind particles enter the...Ch. 10 - Prob. 4CCh. 10 - Prob. 5CCh. 10 - Prob. 6C
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- X-rays are usually produced by making high-velocity electrons collide with metallic targets. For electrons accelerated in a field of 75,000 volts,a. compute the wavelength (in nm) of the x-rays producedb. if this same kinetic energy is transferred to a proton, how fast would the proton be traveling (in m/s)?arrow_forwardidentify the knowns, unknown(s), appropriate formula(s) then computation 1. a). The wavelength of maximum solar emission is observed to be approximately 0.475μm. What is the surface temperature of the sun (assumed as blackbody)? (b) The temperature of the human body when having a high fever is 40 deg C. The intensity of radiation emitted by the human body is maximum at what wavelength? (c) The Cosmic Microwave Background radiation (CMB) fills the universe. If temperature of the space is 2.7 K, then CMB attains intensity maxima at what wavelength?arrow_forwardThe blackbody radiation emitted from a furnace peaks at a wavelength of 2.5 10-6 m (0.0000025 m). What is the temperature inside the furnace? answer ... Karrow_forward
- The attatched equation describes the cross section for the photoionization of a hydrogen atom in quantum state n by a photon of wavelength λ. What is the photoionization cross section for a 13.6 eV photon on hydrogen? (Provide an answer in megabarns. A barn is a unit of area commonly used in particle physics that's 10-28 m2).arrow_forwardWhat is the energy range (in joules and eV) of photonsin the visible spectrum, of wavelength 400 nm to 750 nm?arrow_forwardUse the worked example above to help you solve this problem. (a) Compare the de Broglie wavelength for an electron (me = 9.11 10-31 kg) moving at a speed of 1.11 107 m/s with that of a baseball of mass 0.145 kg pitched at 44.7 m/s. ?e = m ?b = m (b) Compare these wavelengths with that of an electron traveling at 0.999c. m EXERCISEHINTS: GETTING STARTED | I'M STUCK! Find the de Broglie wavelength of a proton (mp = 1.67 10-27 kg) moving with a speed of 1.11 107 m/s.?p = marrow_forward
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