College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Textbook Question
Chapter 30, Problem 8PE
Find the wavelength of the third line in the Lyman series, and identify the type of EM
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In Thomson's experimental setup (Figure given below), the length of the deflecting
plate is 3.0 cm and the distance of the screen to the deflecting plate is 1.0m (x axis). With
the applied electrical field of 2.1 x10° V/m, image of the electron beam is observed at the
height of 36 cm (y axis). With the applied magnetic field of 1.2 x 10³T, the image is seen at
the center of the screen with no deflection.
c) If the length of the deflecting plate would be 2.5 cm, where would the beam is observed?
d) Assuming mass of the electron is known and the value is m,=9.1x1031 kg, find the rest
Energy, total energy and the kinetic energy of the electron.
e) Find the relativistic momentum of the electron.
Hint: Use equations in Thomson's experiment for a, b and c. Use relativistic kinematic
equations for d and e by using the velocity you obtained in a.
Deflecting plates-
Cathode
AB
Anode
Fluorescent screen-
High voltage
Magnet
Find the wavelength of the third line in the Lyman series, and identify the type of EM radiation.
if all the energy from a 93 W light bulb ?is emmited on average at 530.0 nm, how many 530.0 nm photons must be emitted each second to account for all 93w
Chapter 30 Solutions
College Physics
Ch. 30 - Name three different types of evidence for the...Ch. 30 - Explain why patterns observed in the periodic...Ch. 30 - If atoms exist, why can't we see them with visible...Ch. 30 - What two pieces of evidence allowed the first...Ch. 30 - How do the allowed orbits for electrons in atoms...Ch. 30 - How do the allowed orbits for electrons in atoms...Ch. 30 - Explain how Bohr's rule for the quantization of...Ch. 30 - What is a hydrogen-like atom, and how are the...Ch. 30 - Explain why characteristic x rays are the most...Ch. 30 - Why does the energy of characteristic x rays...
Ch. 30 - Observers at a safe distance from atmospheric test...Ch. 30 - Lasers are used to burn and read CDs. Explain why...Ch. 30 - Crystal lattices can be examined with x rays but...Ch. 30 - CT scanners do not detect details smaller than...Ch. 30 - How do the allowed orbits for electrons in atoms...Ch. 30 - Atomic and molecular spectra are discrete. What...Ch. 30 - Hydrogen gas can only absorb EM radiation that has...Ch. 30 - Lasers are used to burn and read CDs. Explain why...Ch. 30 - The coating on the inside of fluorescent light...Ch. 30 - What is the difference between fluorescence and...Ch. 30 - How can you tell that a hologram is a true...Ch. 30 - How is the de Broglie wavelength of electrons...Ch. 30 - What is the Zeeman effect, and what type of...Ch. 30 - Define the quantum numbers n,l,ml,s, and ms.Ch. 30 - For a given value of n, what are the allowed...Ch. 30 - For a given value of l, what are the allowed...Ch. 30 - List all the possible values of s and msfor an...Ch. 30 - Identify the shell, subshell, and number of...Ch. 30 - Which of the following are not allowed? State...Ch. 30 - Using the given charge-to-mass ratios for...Ch. 30 - (a) Calculate the mass of a proton using the...Ch. 30 - If someone wanted to build a scale model of the...Ch. 30 - Rutherford found the size of the nucleus to be...Ch. 30 - In Millikan's oil-drop experiment, one looks at a...Ch. 30 - (a) An aspiring physicist wants to build a scale...Ch. 30 - By calculating its wavelength, show that the first...Ch. 30 - Find the wavelength of the third line in the Lyman...Ch. 30 - Look up the values of the quantities in...Ch. 30 - Verify that the ground state energy E0 is 13.6 eV...Ch. 30 - If a hydrogen atom has its electron in the n=4...Ch. 30 - A hydrogen atom in an excited state can be ionized...Ch. 30 - Find the radius of a hydrogen atom in the n=2...Ch. 30 - Show that (13.6eV)/hc=1.097107m=R (Rydberg's...Ch. 30 - What is the smallest-wavelength line in the Balmer...Ch. 30 - Show that the entire Paschen series is in the...Ch. 30 - Do the Balmer and Lyman series overlap? To answer...Ch. 30 - (a) Which line in the Balmer series is the first...Ch. 30 - A wavelength of 4.653 m is observed in a hydrogen...Ch. 30 - A singly ionized helium ion has only one electron...Ch. 30 - A beryllium ion with a single electron (denoted...Ch. 30 - Atoms can be ionized by thermal collisions, such...Ch. 30 - Verify Equations rn=n2ZaB and...Ch. 30 - The wavelength of the four Balmer series lines for...Ch. 30 - (a) What is the shortest-wavelength x-ray...Ch. 30 - A color television tube also generates some x rays...Ch. 30 - An x ray tube has an applied voltage of 100 kV....Ch. 30 - The maximum characteristic x-ray photon energy...Ch. 30 - What are the approximate energies of the K and K...Ch. 30 - Figure 30.39 shows the energy-level diagram for...Ch. 30 - A helium-neon laser is pumped by electric...Ch. 30 - Ruby lasers have chromium atoms doped in an...Ch. 30 - (a) What energy photons can pump chromium atoms in...Ch. 30 - Some of the most powerful lasers are based on the...Ch. 30 - If an atom has an electron in the n=5 state with...Ch. 30 - An atom has an electron with m1=2. What is the...Ch. 30 - What are the possible values of m1 for an electron...Ch. 30 - What, if any, constraints does a value of ml=1...Ch. 30 - (a) Calculate the magnitude of the angular...Ch. 30 - (a) What is the magnitude of the angular momentum...Ch. 30 - Repeat Exercise 30.40 for l=3.Ch. 30 - (a) How many angles can L make with the z-axis for...Ch. 30 - What angles can the spin S of an electron make...Ch. 30 - (a) How many electrons can be in the n=4 shell?...Ch. 30 - (a) What is the minimum value of 1 for a subshell...Ch. 30 - (a) If one subshell of an atom has 9 electrons in...Ch. 30 - (a) List all possible sets of quantum numbers...Ch. 30 - Which of the following spectroscopic notations are...Ch. 30 - Which of the following spectroscopic notations are...Ch. 30 - (a) Using the Pauli exclusion principle and the...Ch. 30 - Integrated Concepts Estimate the density of a...Ch. 30 - Integrated Concepts The electric and magnetic...Ch. 30 - (a) What is the distance between the slits of a...Ch. 30 - Integrated Concepts A galaxy moving away from the...Ch. 30 - Integrated Concepts Calculate the velocity of a...Ch. 30 - Integrated Concepts In a Millikan oil-drop...Ch. 30 - Integrated Concepts What double-slit separation...Ch. 30 - Integrated Concepts In a laboratory experiment...Ch. 30 - Integrated Concepts Find the value of l, the...Ch. 30 - Integrated Concepts Particles called muons exist...Ch. 30 - Integrated Concepts Calculate the minimum amount...Ch. 30 - Integrated Concepts A carbon dioxide laser used in...Ch. 30 - Integrated Concepts Suppose an MRI scanner uses...Ch. 30 - Integrated Concepts (a) An excimer laser used for...Ch. 30 - Integrated Concepts A neighboring galaxy rotates...Ch. 30 - Integrated Concepts A pulsar is a rapidly spinning...Ch. 30 - Integrated Concepts Prove that the velocity of...Ch. 30 - Unreasonable Results (a) What voltage must be...Ch. 30 - Unreasonable Results A student in a physics...Ch. 30 - Construct Your Own Problem The solar corona is so...Ch. 30 - Construct Your Own Problem Consider the...
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- In Thomson's experimental setup (Figure given below), the length of the deflecting plate is 3.0 cm and the distance of the screen to the deflecting plate is 1.0m (x axis). With the applied electrical field of 2.1 x10° V/m, image of the electron beam is observed at the height of 36 cm (y axis). With the applied magnetic field of 1.2 x 10° T, the image is seen at the center of the screen with no deflection. a) Find the initial velocity of the electron. b) Find the q/m for the electron. c) If the length of the deflecting plate would be 2.5 cm, where would the beam is observed? d) Assuming mass of the electron is known and the value is m=9.1x1031 kg, find the rest Energy, total energy and the kinetic energy of the electron. e) Find the relativistic momentum of the electron. Hint: Use equations in Thomson's experiment for a, b and c. Use relativistic kinematic equations for d and e by using the velocity you obtained in a. Deflecting plates- Cathode AB Anode Fluorescent screen- High voltage…arrow_forwardWhat is the value of e/m for a particle that moves in acircle of radius 14 mm in a 0.86-T magnetic field if a perpendicular 640 V/m electric field will make the path straight?arrow_forwardFind the wavelength (in nm) of the fourth line in the Lyman series. (Round your answer to at least one decimal place.) Identify the type of EM radiation.arrow_forward
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