EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
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Chapter 25.3, Problem 3EYU
If the frequency of an
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(v) A plane electromagnetic wave of frequency 25 MHz travels in free space along the X-
direction. At a particular point in space and time, E = 6.3 J.V/m . What is B at this point?
(a) 2.1×10°T
(b) 2.1×10®TK
(c) 3.5×10ʻTK
(d) 3×10°TK
The electric field of a sinusoidal electromagnetic wave obeys the equationE = -(375 V / m) sin[ (5.97 x 10 rad/s)t + (1.99 x 10 rad/s )x]
(a) What are the amplitudes of the electric and magnetic fields of this wave? (b) What are the frequency,wavelength, and period of the wave? Is this light visible to humans? (c) What is the speed of the wave
If the frequency of an electromagnetic wave is increased, (a) does its speed increase,decrease, or stay the same? (b) Does its wavelength increase, decrease, or stay thesame?
Chapter 25 Solutions
EBK PHYSICS
Ch. 25.1 - Enhance Your Understanding (Answers given at the...Ch. 25.2 - A distant galaxy is moving away from the Earth....Ch. 25.3 - If the frequency of an electromagnetic wave is...Ch. 25.4 - Prob. 4EYUCh. 25.5 - In the system shown in Figure 25-36, a vertically...Ch. 25 - Explain why the invisible man would be unable to...Ch. 25 - While wearing your Polaroid sunglasses at the...Ch. 25 - You want to check the tine while wearing your...Ch. 25 - BIO Polarization and the Ground Spider The ground...Ch. 25 - You are given a sheet of Polaroid material....
Ch. 25 - Can sound waves be polarized? Explain.Ch. 25 - At a garage sale you find a pair of Polaroid...Ch. 25 - If the electric field in an electromagnetic wave...Ch. 25 - Prob. 2PCECh. 25 - Prob. 3PCECh. 25 - Prob. 4PCECh. 25 - Give the direction (N, S, E, W, up, or down) of...Ch. 25 - Prob. 6PCECh. 25 - Prob. 7PCECh. 25 - The light year (ly) is a unit of distance commonly...Ch. 25 - Alpha Centauri, the closest star to the Sun, is...Ch. 25 - Prob. 10PCECh. 25 - A fighter jet is traveling at 515 m/s directly...Ch. 25 - A distant star is traveling directly away from...Ch. 25 - Prob. 13PCECh. 25 - Prob. 14PCECh. 25 - Prob. 15PCECh. 25 - Prob. 16PCECh. 25 - Communicating with the Voyager Spacecraft The...Ch. 25 - A father and his daughter are interested in the...Ch. 25 - Prob. 19PCECh. 25 - Prob. 20PCECh. 25 - Prob. 21PCECh. 25 - Baseball scouts often use a radar gun to measure...Ch. 25 - A state highway patrol car radar unit uses a...Ch. 25 - Prob. 24PCECh. 25 - Prob. 25PCECh. 25 - BIO Dental X-rays The X-rays produced in the...Ch. 25 - Find the frequency of green light with a...Ch. 25 - Prob. 28PCECh. 25 - How many led wavelengths ( = 705 nm) tall are you?Ch. 25 - A cell phone transmits at a frequency of 1.94 ...Ch. 25 - Microwave Oven If a microwave oven produces...Ch. 25 - BIO Human Radiation Under normal conditions,...Ch. 25 - BIO UV Radiation Ultraviolet light is typically...Ch. 25 - Prob. 34PCECh. 25 - Predict/Calculate When an electromagnetic wave...Ch. 25 - Predict/ Calculate (a) Which color of light has...Ch. 25 - Prob. 37PCECh. 25 - A television is tuned to a station broadcasting at...Ch. 25 - An AM radio stations antenna is constructed to be...Ch. 25 - Prob. 40PCECh. 25 - Find the difference in wavelength (1 2) for each...Ch. 25 - Synchrotron Frequency In one portion of a...Ch. 25 - Prob. 43PCECh. 25 - Prob. 44PCECh. 25 - Prob. 45PCECh. 25 - What is the rms value of the electric field in a...Ch. 25 - The magnetic field in an electromagnetic wave has...Ch. 25 - What is the maximum value of the electric field in...Ch. 25 - What is the maximum value of the electric field in...Ch. 25 - Predict/Calculate Electromagnetic wave 1 has a...Ch. 25 - A 75-kW radio station broadcasts its signal...Ch. 25 - At what distance will a 45-W lightbulb have the...Ch. 25 - What is the ratio of the sunlight intensity...Ch. 25 - Predict/Calculate In the following, assume that...Ch. 25 - Prob. 55PCECh. 25 - Prob. 56PCECh. 25 - Sunlight Intensity After filtering through the...Ch. 25 - Predict/Calculate (a) Find the electric and...Ch. 25 - Prob. 59PCECh. 25 - BIO You are standing 2.5 m from a 150-W lightbulb....Ch. 25 - Prob. 61PCECh. 25 - Find the rms electric and magnetic fields al a...Ch. 25 - Prob. 63PCECh. 25 - Prob. 64PCECh. 25 - Prob. 65PCECh. 25 - BIO Laser Surgery Each pulse produced by an...Ch. 25 - Prob. 67PCECh. 25 - Predict Explain Consider the two polarization...Ch. 25 - Predict/Explain Consider the two polarization...Ch. 25 - An incident beam of light with an intensityl0....Ch. 25 - Vertically polarized light with an intensity of...Ch. 25 - A person riding in a boat observes that the...Ch. 25 - Unpolarized light passes through two polarizers...Ch. 25 - In Problem 73, what should be the angle between...Ch. 25 - Unpolarized light is incident with intensity /0 on...Ch. 25 - Predict/Calculate A beam of vertically polarized...Ch. 25 - Predict/Calculate Repeat Problem 76, this time...Ch. 25 - BIO Predict/Calculate Optical Activity Optically...Ch. 25 - A helium-noon laser omits a beam of unpolarizod...Ch. 25 - Referring to Figure 25-46, suppose that filter 3...Ch. 25 - Prob. 81GPCh. 25 - CE If sailors of the future use radiation pressure...Ch. 25 - Prob. 83GPCh. 25 - BIO Radiofrequency Ablation In radiofrequency (RF)...Ch. 25 - Predict/Calculate At a particular instant of time,...Ch. 25 - Predict/Calculate A light beam traveling in the...Ch. 25 - Figure 25-47 shows four polarization experiments...Ch. 25 - Lightning and Thunder During a thunderstorm a bolt...Ch. 25 - Prob. 89GPCh. 25 - Prob. 90GPCh. 25 - Predict/Calculate Suppose the distance to the...Ch. 25 - BIO Predict/Calculate Consider the physical...Ch. 25 - BIO Polaroid Vision in a Spider Experiments show...Ch. 25 - A state highway patrol car radar unit uses a...Ch. 25 - What is the ratio of the sunlight intensity...Ch. 25 - What area is needed for a solar collector to...Ch. 25 - Prob. 97GPCh. 25 - Three polarizers are arranged as shown in Figure...Ch. 25 - Prob. 99GPCh. 25 - Orbital Drift The radiation pressure exerted by...Ch. 25 - A lightbulb emits light uniformly in all...Ch. 25 - Radio Reception A 125-kW radio station broadcasts...Ch. 25 - Light Rocket Stranded 12 m from your spacecraft,...Ch. 25 - A typical home may require a total of 2.00 103...Ch. 25 - Prob. 105GPCh. 25 - Predict/Calculate A typical laser used in...Ch. 25 - Four polarizers are set up so that the...Ch. 25 - BIO Optical Activity of Sugar The sugar...Ch. 25 - Visible-Light Curing in Dentistry An essential...Ch. 25 - Visible-Light Curing in Dentistry An essential...Ch. 25 - Visible-Light Curing in Dentistry An essential...Ch. 25 - Visible-Light Curing in Dentistry An essential...Ch. 25 - Predict/Calculate Referring to Example 25-12...Ch. 25 - Referring to Example 25-12 Suppose the incident...
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- If the electric field of an electromagnetic wave is oscillating along the z-axis and the magnetic field is oscillating along the x-axis, in what possible direction is the wave traveling?arrow_forwardThe electric field of an electromagnetic wave traveling in vacuum is described by the following wave function: E =(5.00V/m)cos[kx(6.00109s1)t+0.40] j where k is the wavenumber in rad/m, x is in m, t s in Find the following quantities: (a) amplitude (b) frequency (c) wavelength (d) the direction of the travel of the wave (e) the associated magnetic field wavearrow_forwardA plane electromagnetic wave travels northward. At one instant, its electric field has a magnitude of 6.0 V/m and points eastward. What are the magnitude and direction of the magnetic field at this instant?arrow_forward
- Can the human body detect electromagnetic radiation that is outside the visible region of the spectrum?arrow_forwardAn incandescent light bulb emits only 2.6 W of its power as visible light. What is the rms electric field of the emitted light at a distance of 3.0 m from the bulb?arrow_forwardWhat is the intensity of an electromagnetic wave with a peak electric field strength of 125 Vim?arrow_forward
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- A plane electromagnetic wave traveling in the positive direction of an x axis in vacuum has components Ex = Ey = 0 and Ez = (4.0 V/m) cos[(7 × 1015 s1)(t - x/c)].(a) What is the amplitude of the magnetic field component? (b) Parallel to which axis does the magnetic field oscillate? (c) When the electric field component is in the positive direction of the z axis at a certain point P, what is the direction of the magnetic field component there? Assume that the speed of light is 2.998*108 m/s. %3D (a) Number Units (b) (c) Use correct number of significant digits; the tolerance is +/-1 in the 3rd significant digitarrow_forwardThe electric field of plane electromagnetic wave is E = 400 V/m. At the same point and the same instant of time the magnetic field is: A) 13x10^-7 B) 10x10^-7 C) 20x10^-7 D)40x10^-7arrow_forwardA plane electromagnetic wave traveling in the positive direction of an x axis in vacuum has components Ex = Ey = 0 and E₂ = (4.7 V/m) cos[(x 1015 s-¹)(t-x/c)]. (a) What is the amplitude of the magnetic field component? (b) Parallel to which axis does the magnetic field oscillate? (c) When the electric field component is in the positive direction of the z axis at a certain point P, what is the direction of the magnetic field component there? Assume that the speed of light is 2.998*108 m/s. (a) Number i Unitsarrow_forward
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