College Physics For Ap® Courses
16th Edition
ISBN: 9781938168932
Author: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram
Publisher: OpenStax
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Textbook Question
Chapter 29, Problem 13CQ
Some television tubes are CRTs. They use an approximately 30-kV accelerating potential to send electrons to the screen, where the stimulate phosphors to emit the light that forms the pictures we watch. Would you expect x rays also to be treated?
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Consider the situation in the figure below; a neutral conducting ball hangs from the ceiling by an insulating string, and a charged insulating rod is going to be placed nearby.
A. First, if the rod was not there, what statement best describes the charge distribution of the ball?
1) Since it is a conductor, all the charges are on the outside of the ball. 2) The ball is neutral, so it has no positive or negative charges anywhere. 3) The positive and negative charges are separated from each other, but we don't know what direction the ball is polarized. 4) The positive and negative charges are evenly distributed everywhere in the ball.
B. Now, when the rod is moved close to the ball, what happens to the charges on the ball?
1) There is a separation of charges in the ball; the side closer to the rod becomes positively charged, and the opposite side becomes negatively charged. 2) Negative charge is drawn from the ground (via the string), so the ball acquires a net negative charge. 3)…
answer question 5-9
AMPS
VOLTS
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5) 50 A
110 V
6) .08 A
39 V
7) 0.5 A
60
8) 2.5 A
110 V
Chapter 29 Solutions
College Physics For Ap® Courses
Ch. 29 - Give an example of a physical entity that is...Ch. 29 - Give an example of a physical entity that is not...Ch. 29 - What aspect of the blackbody spectrum forced...Ch. 29 - If Planck's constant were large, say 1034 times...Ch. 29 - Why don't we notice quantization in everyday...Ch. 29 - Is visible light the only type of EM radiation...Ch. 29 - Which aspects of the photoelectric effect cannot...Ch. 29 - Is the photoelectric effect a direct consequence...Ch. 29 - Insulators (nonmetals) have a higher BE than...Ch. 29 - If you pick up and shake a piece of metal that has...
Ch. 29 - Why are UV, x rays, and rays called ionizing...Ch. 29 - How can treating food with ionizing radiation help...Ch. 29 - Some television tubes are CRTs. They use an...Ch. 29 - Tanning salons use "safe" UV with a longer...Ch. 29 - Your pupils dilate when visible light intensity is...Ch. 29 - One could feel heat transfer in the form of...Ch. 29 - Can a single microwave photon cause cell damage?...Ch. 29 - In an the maximum photon energy E given by hf=qV....Ch. 29 - Which formula may be used for the momentum of all...Ch. 29 - Is there any measurable difference between the...Ch. 29 - Why don't we feel the momentum of sunlight when we...Ch. 29 - How does the interference of water waves differ...Ch. 29 - Describe one type of evidence for the wave nature...Ch. 29 - Describe one type of evidence for the particle...Ch. 29 - What is the Heisenberg uncertainty principle? Does...Ch. 29 - In what ways are matter and energy related that...Ch. 29 - A LiBr molecule oscillates with a frequency of...Ch. 29 - The difference in energy between allowed...Ch. 29 - A physicist is watching a 15-kg orangutan at a zoo...Ch. 29 - What is the longest-wavelength EM radiation that...Ch. 29 - Find the longest-wavelength photon that can eject...Ch. 29 - What is the binding energy in eV of electrons in...Ch. 29 - Calculate the binding energy in eV of electrons in...Ch. 29 - What is the maximum kinetic energy in eV of...Ch. 29 - UV radiation having a wavelength of 120 nm falls...Ch. 29 - Violet light of wavelength 400 nm ejects electrons...Ch. 29 - UV radiation having a 300-nm wavelength falls on...Ch. 29 - What is the wavelength of EM radiation that ejects...Ch. 29 - Find the wavelength of photons that eject 0.100-eV...Ch. 29 - What is the maximum velocity of electrons ejected...Ch. 29 - Photoelectrons from a material with a binding...Ch. 29 - A laser with a power output of 2.00 mW at a...Ch. 29 - (a) Calculate the number of photoelectrons per...Ch. 29 - Unreasonable Results Red light having a wavelength...Ch. 29 - Unreasonable Results (a) What is the binding...Ch. 29 - What is the energy in joules and eV of a photon in...Ch. 29 - (a) Find the energy in joules and eV of photons in...Ch. 29 - Calculate the frequency in hertz of a 1.00-MeV ...Ch. 29 - (a) What is the wavelength of a 1.00-eV photon?...Ch. 29 - Do the unit conversions necessary to show that...Ch. 29 - Confirm the statement in the text that the range...Ch. 29 - (a) Calculate the energy in eV of an IP photon of...Ch. 29 - Prove that, to three-digit accuracy,...Ch. 29 - (a) What is the maximum energy in eV of photons...Ch. 29 - What is the accelerating voltage of an x-ray tube...Ch. 29 - (a) What is the ratio of power outputs by two...Ch. 29 - How many photons per second are emitted by the...Ch. 29 - Some satellites use nuclear power. (a) If such a...Ch. 29 - (a) If the power output of a 650-kHz radio station...Ch. 29 - How many x-ray photons per second are created by...Ch. 29 - (a) How far away must you be from a 650-kHz radio...Ch. 29 - Assuming that 10.0% of a 100-W light bulb's energy...Ch. 29 - Construct Your Own Problem Consider a laser pen....Ch. 29 - (a) Find the momentum of a 4.00-cm-wavelength...Ch. 29 - (a) What is the momentum of a 0.0100-nm-wavelength...Ch. 29 - (a) What is the wavelength of a photon that has a...Ch. 29 - (a) A -ray photon has a momentum of...Ch. 29 - (a) Calculate the momentum of a photon having a...Ch. 29 - Repeat the previous problem for a...Ch. 29 - (a) Calculate the wavelength of a photon that has...Ch. 29 - (a) Find the momentum of a 100-keV x-ray photon....Ch. 29 - Take the ratio of relativistic rest energy, E=mc2,...Ch. 29 - Construct Your Own Problem Consider a space sail...Ch. 29 - Unreasonable Results A car feels a small force due...Ch. 29 - At what velocity will an electron have a...Ch. 29 - What is the wavelength of an electron moving at...Ch. 29 - At what velocity does a proton have a 6.00-fm...Ch. 29 - What is the velocity of a 0.400-kg billiard ball...Ch. 29 - Find the wavelength of a proton moving at 1.00% of...Ch. 29 - Experiments are performed with ultra-cold neutrons...Ch. 29 - (a) Find the velocity of a neutron that has a...Ch. 29 - What is the wavelength of an electron accelerated...Ch. 29 - What is the kinetic energy of an electron in a TEM...Ch. 29 - (a) Calculate the velocity of an electron that has...Ch. 29 - The velocity of a proton emerging from a Van de...Ch. 29 - The kinetic energy of an electron accelerated in...Ch. 29 - Unreasonable Results (a) Assuming it is...Ch. 29 - (a) If the position of an electron in a membrane...Ch. 29 - (a) If the position of a chlorine ion in a...Ch. 29 - Suppose the velocity of an electron in an atom is...Ch. 29 - The velocity of a proton in an accelerator is...Ch. 29 - A relatively long-lived excited state of an atom...Ch. 29 - (a) The lifetime of a highly unstable nucleus is...Ch. 29 - The decay energy of a short-lived particle has an...Ch. 29 - The decay energy of a short-lived nuclear excited...Ch. 29 - What is the approximate uncertainty in the mass of...Ch. 29 - Derive the approximate form of Heisenberg's...Ch. 29 - Integrated Concepts The 54.0-eV electron in...Ch. 29 - Integrated Concepts An electron microscope...Ch. 29 - Integrated Concepts A certain heat lamp emits 200...Ch. 29 - Integrated Concepts On its high power setting, a...Ch. 29 - Integrated Concepts (a) Calculate the amount of...Ch. 29 - Integrated Concepts (a) What is for an electron...Ch. 29 - Integrated Concepts (a) What is for a proton...Ch. 29 - Integrated Concepts An electron microscope passes...Ch. 29 - Integrated Concepts (a) Calculate the velocity of...Ch. 29 - Integrated Concepts (a) What is the separation...Ch. 29 - Integrated Concepts A laser with a power output of...Ch. 29 - Integrated Concepts One problem with x rays is...Ch. 29 - Integrated Concepts A 1.00-fm photon has a...Ch. 29 - Integrated Concepts The momentum of light is...Ch. 29 - Integrated Concepts Sunlight above the Earth's...
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