Astronomy
1st Edition
ISBN: 9781938168284
Author: Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 23E
Explain the results of Rutherford’s gold foil experiment and how they changed our model of the atom.
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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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- Describe how the hydrogen atom might absorb a photon of energy less than 13.6 eV. Describe a process by which a 9.8-eV photon might be absorbed. What about a 15.2-eV photon?arrow_forwardWhich best explains the photoelectric effect—the particle nature or the wave nature of the electron? Which best explains the discrete levels in the Bohr model of the atom? Defend your answers.arrow_forwardCalculate the wavelength of a photon emitted by the transition of an electron from the fifth orbit to the second orbit of the hydrogen atom a.) 434 nm b.) 456 nm c.) 863 nm d.) 268 nmarrow_forward
- Please describe Rutherford planetary model of atom (3-4 short sentences).arrow_forwardConsider the Bohr model of the atom. Suppose an electron in a hydrogen atom transitions from the n=3 level to the n=5 level. 1) CALCULATE the energy (ΔE) for this transition. 2) Does this transition involve the absorption or emission of a photon of light? How do you know?arrow_forwardCalculate the wavelength, in nanometers, of the photon emitted when the electron in a hydrogen atom transitions from the level n1 = 8 to level n2 = 2. Use three significant figures in your answer.arrow_forward
- What is an emission spectrum? Use the Bohr model to explain why the emission spectrum of the hydrogen atom consists of distinct lines at specific wavelengths.arrow_forwardBe sure to answer all parts. Consider the following energy levels of a hypothetical atom: E4-2.51 × 10-19 J E3-5.01 10-19 J E2 -1.25 x 10-18 J E₁-1.85 × 10-18 J (a) What is the wavelength of the photon needed to excite an electron from E₁ to E4? x 10 (b) What is the energy (in joules) a photon must have in order to excite an electron from E₂ to E3? x 10 m x 10 J (c) When an electron drops from the E3 level to the E₁ level, the atom is said to undergo emission. Calculate the wavelength of the photon emitted in this process. marrow_forwardn = 5 n = 4 3. Refer to the illustration on the right. In a set of experiments on a hypothetical one-electron atom, you measure the wavelengths of the photons emitted from transitions ending in the ground state (n=1). You also observe that it takes 15 eV to ionize this atom. (a) What is the energy of the atom in each of the levels (i.e. n=1, n=2, n=3, n=4, n=5)? (b) If an electron made a transition from the n=4 to the n=2 level, what wavelength of light n = 3 n = 2 would it emit? n = 1 A = 73.86 nm A = 75.63 nm A=79.76 nm A = 94.54 nmarrow_forward
- Explain different types of spectral series of hydrogen atom. Find formula for wavelength of each series.arrow_forwardno photo electrons are emitted. Why? I want a simple answer.arrow_forwardUsing the standard model, analyse the roles of both forces and particles in the current understanding of the atom.arrow_forward
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