Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Chapter 5, Problem 4E
Where in an atom would you expect to find electrons? Protons? Neutrons?
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Determine the distance between the electron and proton in an atom if the potential energy U of the electron is 13.8 ev (electronvolt, 1 eV
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Determine the distance between the electron and proton in an atom if the potential energy U of the electron is 13.8 ev (electronvolt, 1 eV = 1.6 × 10-19 J). Give your answer in
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Consider the element Hydrogen. In this atom, assume the electron travels with a speed of 6.8 105 m/s. What is the radius between the nucleus and the orbiting electron in m?
Chapter 5 Solutions
Astronomy
Ch. 5 - What distinguishes one type of electromagnetic...Ch. 5 - What is a wave? Use the terms wavelength and...Ch. 5 - Is your textbook the kind of idealized object...Ch. 5 - Where in an atom would you expect to find...Ch. 5 - Explain how emission lines and absorption lines...Ch. 5 - Explain how the Doppler effect works for sound...Ch. 5 - What kind of motion for a star does not produce a...Ch. 5 - Describe how Bohr’s model used the work of...Ch. 5 - Explain why light is referred to as...Ch. 5 - Explain the difference between radiation as it is...
Ch. 5 - What are the differences between light waves and...Ch. 5 - Which type of wave has a longer wavelength: AM...Ch. 5 - Explain why astronomers long ago believed that...Ch. 5 - Explain what the ionosphere is and how it...Ch. 5 - Which is more dangerous to living things, gamma...Ch. 5 - Explain why we have to observe stars and other...Ch. 5 - Explain why hotter objects tend to radiate more...Ch. 5 - Explain how we can deduce the temperature of a...Ch. 5 - Explain what dispersion is and how astronomers use...Ch. 5 - Explain why glass prisms disperse light.Ch. 5 - Explain what Joseph Fraunhofer discovered about...Ch. 5 - Explain how we use spectral absorption and...Ch. 5 - Explain the results of Rutherford’s gold foil...Ch. 5 - Is it possible for two different atoms of carbon...Ch. 5 - What are the three isotopes of hydrogen, and how...Ch. 5 - Explain how electrons use light energy to move...Ch. 5 - Explain why astronomers use the term “blueshifted”...Ch. 5 - If spectral line wavelengths are changing for...Ch. 5 - Make a list of some of the many practical...Ch. 5 - With what type of electromagnetic radiation would...Ch. 5 - Why is it dangerous to be exposed to X-rays but...Ch. 5 - Go outside on a clear night, wait 15 minutes for...Ch. 5 - Water faucets are often labeled with a red dot for...Ch. 5 - Suppose you are standing at the exact center of a...Ch. 5 - How could you measure Earth’s orbital speed by...Ch. 5 - Astronomers want to make maps of the sky showing...Ch. 5 - The greenhouse effect can be explained easily if...Ch. 5 - An idealized radiating object does not reflect or...Ch. 5 - Why are ionized gases typically only found in very...Ch. 5 - Explain why each element has a unique spectrum of...Ch. 5 - What is the wavelength of the carrier wave of a...Ch. 5 - What is the frequency of a red laser beam, with a...Ch. 5 - You go to a dance club to forget how hard your...Ch. 5 - What is the energy of the photon with the...Ch. 5 - If the emitted infrared radiation from Pluto, has...Ch. 5 - What is the temperature of a star whose maximum...
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- An electron revolves around the nucleus of an atom in a circular orbit of radius 4.0Å with a speed of 6.0 x 10^6 ms-1. Calculate the linear kinetic energy.arrow_forwardThe electron of a hydrogen atom is at a distance 5.3x10 m from the nucleus. If the charge of the nucleus is 1.6x10¹9 C, then the electrostatic potential energy (in electron volt (eV)) of the electron is: Select one: a. -1.5 b. 27.2 c. 1.5 d. -27.2 e. zeroarrow_forwardThe nucleus of a certain atom is 7.30 fm in diameter and has 76.0 protons. What is the acceleration of another proton 4.00 fm from the surface of the nucleus? - 2.35×1027 m/s2, away from the nucleus- 8.20×1028 m/s2, towards the nucleus- 6.55×1029 m/s2, towards the nucleus- 1.79×1029 m/s2, away from the nucleusarrow_forward
- In a hydrogen atom, the electron is at a distance of 4.768 Å from the nucleus. The angular momentum of the electron is......arrow_forwardNow you have a nucleus with 16 protons at x = 5.0 Angstroms on the x-axis. How much work would it take to bring in ANOTHER nucleus with 5 protons from 1 m away and place it at y = 5.2 Angstroms on the y-axis? 87.4 eV 145.7 eV -13.8 eV 159.5 eVarrow_forwardFrom far away a proton is fired directly toward the center of the nucleus of a mercury atom. Mercury is element number 80, and the diameter of the nucleus is 14.0 fm. Assume the mercury nucleus is fully-ionized, with no electrons bound to it. If the proton is fired at a speed of 3.8×107 m/s, what is its closest approach to the surface of the nucleus? Assume the nucleus remains at rest. Express your answer with the appropriate units. ► View Available Hint(s) 0 d = 2.7 Submit A fm Previous Answers ? X Incorrect; Try Again; 13 attempts remainingarrow_forward
- Determine the distance between the electron and proton in an atom if the potential energy U of the electron is 10.1 eV (electronvolt, 1 eV = 1.6 × 10-19 J). Give your answer in Angstrom (1 A = 10-10 m). Answer: Choose... +arrow_forwardAn electron is 0.5 Å away from a carbon nucleus which contains 6 protons. Find the mutual force of attraction between the nucleus and the electron. 1Å (Angstrom)= 10^-10m, e=1.6x10^-19C.arrow_forward198. In Fig. 89, four electrons, located at the vertices of a square of side a=1mm, rotate describing a circular orbit around the proton. This is located in the center of the square. Find the angular velocity (lattice/s) of the movement of electrons through the orbit. (m=9,1 . 10-³1 kg, k=9 x 10° N. m²/C²) (a)1,70.105 b)1,72.105 c)1,74.10¹ Fig.89 d)1,76.105 -e c)1,78.105arrow_forward
- 7. The spherical nucleus of a cer- tain atom contains a positive charge Ze in a volume of radius R. Compare the force exerted on an electron inside the nucleus at ra- dius 0.5R with the force at radius R for a nucleus in which (a) the charge density is constant throughout its volume, and (b) the charge density increases in direct proportion to the radius r.arrow_forward17) Shown below is a structure of seven atoms with a "B" atom in the middle surrounded by "A" atoms. Nearest neighbors are separated by ro. A A A B A A A: 42 x 10-2¹ J B: 7 x 10-21 J C: 30 x 10-21 J D: 15 x 10-21 J E: 5 x 10-21 J A How much energy is required to remove only the B atom from the center, given that the well depth for an A-A pair is 2 x 10-2¹J and for a A-B pair is 5 x 10-2¹J?arrow_forward7) no handwritten, only typing..arrow_forward
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