Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
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Chapter 29, Problem 18E
Roughly how long does it take light to travel 1 foot?
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Three slits, each separated from its neighbor by d = 0.06 mm, are illuminated by a coherent light source of
wavelength 550 nm. The slits are extremely narrow. A screen is located L = 2.5 m from the slits. The
intensity on the centerline is 0.05 W. Consider a location on the screen x = 1.72 cm from the centerline.
a) Draw the phasors, according to the phasor model for the addition of harmonic waves, appropriate for this
location.
b) From the phasor diagram, calculate the intensity of light at this location.
A Jamin interferometer is a device for measuring or for comparing the indices of refraction of gases. A beam
of monochromatic light is split into two parts, each of which is directed along the axis of a separate cylindrical
tube before being recombined into a single beam that is viewed through a telescope. Suppose we are given the
following,
•
Length of each tube is L = 0.4 m.
• λ= 598 nm.
Both tubes are initially evacuated, and constructive interference is observed in the center of the field of view. As
air is slowly let into one of the tubes, the central field of view changes dark and back to bright a total of 198
times.
(a) What is the index of refraction for air?
(b) If the fringes can be counted to ±0.25 fringe, where one fringe is equivalent to one complete cycle of
intensity variation at the center of the field of view, to what accuracy can the index of refraction of air be
determined by this experiment?
Chapter 29 Solutions
Essential University Physics
Ch. 29.2 - Would you expect to find a magnetic field between...Ch. 29.5 - Prob. 29.3GICh. 29.6 - Prob. 29.4GICh. 29.7 - Prob. 29.5GICh. 29.8 - Lasers 1 and 2 emit light of the same color, and...Ch. 29 - Why is Maxwells modification of Ampres law...Ch. 29 - Prob. 2FTDCh. 29 - Prob. 3FTDCh. 29 - Prob. 4FTDCh. 29 - When astronomers observe a supernova explosion in...
Ch. 29 - The Sun emits about half of its...Ch. 29 - An LC circuit is made entirely from...Ch. 29 - Prob. 8FTDCh. 29 - The intensity of light drops as the inverse square...Ch. 29 - Electromagnetic waves dont readily penetrate...Ch. 29 - Prob. 11ECh. 29 - Prob. 12ECh. 29 - The fields of an electromagnetic wave are E = Ep...Ch. 29 - A radio waves electric field is given by the...Ch. 29 - A light-minute is the distance light travels in 1...Ch. 29 - Your intercontinental telephone call is carried by...Ch. 29 - An airplanes radar altimeter works by bouncing...Ch. 29 - Roughly how long does it take light to travel 1...Ch. 29 - If you speak via radio from Earth to an astronaut...Ch. 29 - What are the wavelengths of (a) a 100-MHz FM radio...Ch. 29 - A 60-Hz power line emits electromagnetic...Ch. 29 - Microwave ovens for consumers use operate at 2.45...Ch. 29 - Prob. 23ECh. 29 - Prob. 24ECh. 29 - Vertically polarized light passes through a...Ch. 29 - Prob. 26ECh. 29 - Prob. 27ECh. 29 - Estimate the peak electric field inside a 1.1-kW...Ch. 29 - Prob. 29ECh. 29 - Prob. 30ECh. 29 - Your university radio station has a 5.0-kW radio...Ch. 29 - Example 29.2: A green laser pointer produces...Ch. 29 - Example 29.2: An infrared laser that sends signals...Ch. 29 - Example 29.2: An AM radio station broadcasts with...Ch. 29 - A public FM radio station broadcasts at 88.7 MHz....Ch. 29 - When the cellphone of Example 29.4 find itself in...Ch. 29 - What transmitter power would be needed for a...Ch. 29 - The Voyager 1 spacecraft, now in interstellar...Ch. 29 - Example 29.4: Rovers on the surface of Mars...Ch. 29 - Prob. 40PCh. 29 - Prob. 41PCh. 29 - The medical profession divides the ultraviolet...Ch. 29 - Prob. 43PCh. 29 - A polarizer blocks 75% of a polarized light beam....Ch. 29 - Prob. 45PCh. 29 - Unpolarized light of intensity S0 passes first...Ch. 29 - Prob. 47PCh. 29 - Prob. 48PCh. 29 - High microwave intensities can cause biological...Ch. 29 - Use the fact that sunlight intensity at Earths...Ch. 29 - A quasar 10 billion light-years from Earth appears...Ch. 29 - Prob. 52PCh. 29 - Prob. 53PCh. 29 - Find the peak electric and magnetic fields 1.5 m...Ch. 29 - Prob. 55PCh. 29 - Prob. 56PCh. 29 - A laser produces an average power of 7.0 W in a...Ch. 29 - Prob. 58PCh. 29 - A 65-kg astronaut is floating in empty space. If...Ch. 29 - Prob. 60PCh. 29 - A white dwarf star is approximately the size of...Ch. 29 - Prob. 62PCh. 29 - In a stack of polarizing sheets, each sheet has...Ch. 29 - Prob. 64PCh. 29 - Prob. 65PCh. 29 - Maxwells equations in a dielectric resemble those...Ch. 29 - Prob. 67PCh. 29 - Prob. 68PCh. 29 - Earth emits infrared radiation at very rearly the...Ch. 29 - Prob. 70PCh. 29 - Prob. 71PCh. 29 - The table below shows the intensity of the radio...Ch. 29 - If a sunlight-powered sailing spacecraft...Ch. 29 - Prob. 74PPCh. 29 - A sail capable of propelling a spacecraft to the...Ch. 29 - Prob. 76PP
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