21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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7. The wave of wavelength 5900 Å emitted by any atom or
molecule must have some finite total length which is
known as the coherence length. For sodium light, this
length is 2.4 cm. The number of oscillation in this length
will be
(a) 4.068 x 10
(c) 4.068 x 106
(b) 4.068 x 10*
(d) 4.068 x 10
9. T/F
a. Perfect absorbers of electromagnetic radiation are also perfect emitters.
b. At any instant in time, it is possible to specify simultaneously the position and the
momentum of a particle to arbitrarily high precision.
C.
The ground state is the lowest energy level in an atom.
d. Certain types of sunglasses are very effective at diminishing light reflected from surfaces
because of polarization.
e.
A light ray bends when it goes from one medium to another because of diffraction.
1. A photon of light has a frequency of 5.00 x 1014 Hz. If the frequency of the photon was doubled then which of these would happen to the energy of this photon?
a.
it would triple
b.
it would become one-fourth as much
c.
it would become half as much
d.
it would quadruple
e.
it would double
Chapter 5 Solutions
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
Ch. 5.1 - Prob. 5.1ACYUCh. 5.1 - Prob. 5.1BCYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5 - Prob. 1QPCh. 5 - Prob. 2QPCh. 5 - Prob. 3QPCh. 5 - Prob. 4QP
Ch. 5 - Prob. 5QPCh. 5 - Prob. 6QPCh. 5 - Prob. 7QPCh. 5 - Prob. 8QPCh. 5 - Prob. 9QPCh. 5 - Prob. 10QPCh. 5 - Prob. 11QPCh. 5 - Prob. 12QPCh. 5 - Prob. 13QPCh. 5 - Prob. 14QPCh. 5 - Prob. 15QPCh. 5 - Prob. 16QPCh. 5 - Prob. 17QPCh. 5 - Prob. 18QPCh. 5 - Prob. 19QPCh. 5 - Prob. 20QPCh. 5 - Prob. 21QPCh. 5 - Prob. 22QPCh. 5 - Prob. 23QPCh. 5 - Prob. 24QPCh. 5 - Prob. 25QPCh. 5 - Prob. 26QPCh. 5 - Prob. 27QPCh. 5 - Prob. 28QPCh. 5 - Prob. 29QPCh. 5 - Prob. 30QPCh. 5 - Prob. 31QPCh. 5 - Prob. 32QPCh. 5 - Prob. 33QPCh. 5 - Prob. 34QPCh. 5 - Prob. 35QPCh. 5 - Prob. 36QPCh. 5 - Prob. 37QPCh. 5 - Prob. 38QPCh. 5 - Prob. 39QPCh. 5 - Prob. 40QPCh. 5 - Prob. 41QPCh. 5 - Prob. 42QPCh. 5 - Prob. 43QPCh. 5 - Prob. 44QPCh. 5 - Prob. 45QP
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- (a) What is the shortest-wavelength x-ray radiation that can be generated in an x-ray tube with an applied voltage of 50.0 kV? (b) Calculate the photon energy in eV. (c) Explain the relationship of the photon energy to the applied voltage.arrow_forward(a) What is the wavelength of a photon that has a momentum of 5.001029kgm/s ? (b) Find its energy in eV.arrow_forwardAn 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_forward
- (a) If the power output of a 650-kHz radio station is 50.0 kW, how many photons per second are produced? (b) If the radio waves are broadcast uniformly in all directions, find the number of photons per second per square meter at a distance of 100 km. Assume no reflection from the ground or absorption by the air.arrow_forwardWhat is the wavelength of an electron moving at 3.00% of the speed of light?arrow_forward(a) How far away must you be from a 650-kHz radio station with power 50.0 kW for there to be only one photon per second per square meter? Assume no reflections or absorption, as if you were in deep outer space. (b) Discuss the implications for detecting intelligent life in other solar systems by detecting their radio broadcasts.arrow_forward
- Light falling on a metal surface causes electrons to be emitted from the metal by the photoelectric effect. As we increase the intensity of this light, but keep its wavelength the same (there may be more than one correct answer), A. The number of electrons emitted from the metal increases. B. The number of electrons emitted from the metal does not change. C. The maximum speed of the emitted electrons does not change. D. The maximum speed of the emitted electrons increases.arrow_forward4. For a photoelectric effect experiment the incident light must be above the cut-off frequency, otherwise: A. the effect will not be seen. B. the effect will only be seen for very bright incident light. C. there will be a time delay before the photoelectrons will eject. D. the effect will happen too quickly for human perception.arrow_forwardThe photoelectric effect: a. results in the ejection of electrons by light at high intensity. b. is the phenomenon that electrons will only be ejected from the surface of a metal by light that has some minimum brightness, no matter what the frequency. c. was explained by Max Planck. d. describes the phenomenon of producing light by shining a beam of electrons on a metal surface until it glows. e. is the phenomenon that electrons will only be ejected from the surface of a metal by light that has some minimum frequency, no matter how bright or how long you apply the light at a lower frequency.arrow_forward
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