Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
expand_more
expand_more
format_list_bulleted
Question
Chapter 30, Problem 25P
(a)
To determine
The angle of the
(b)
To determine
The distance of radiation.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Asap plzzz
Consider a bright star in our night sky. Assume its distance from Earth is 82.9 light-years (ly) and its power output is 4.00 x 1028 w, about 100 times that of the Sun.
(a) Find the intensity of the starlight at the Earth.
|nw/m²
(b) Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year. (The radius of Earth is 6.37 x 106 m.)
MW
The electric field intensity of a linearly polarized plane wave propagating
in the +z Direction in seawater is H-ay 100 sin(107лt-/3) at
z=0. The constitutive parameters of sea water are Єr = 80 μr =
1 and σ = 4). (a) Determine the attenuation constant, Phase constant,
o
intrinsic impedance Phase velocity/wavelength and skin depth (b) Find
the distance at which the amplitude of E Is 1/8 its value at z=0 (c) Write
the expression for E(z,t) and H(z,t) at Z=0.4 m as functions of t
Chapter 30 Solutions
Physics for Scientists and Engineers
Ch. 30 - Prob. 1PCh. 30 - Prob. 2PCh. 30 - Prob. 3PCh. 30 - Prob. 4PCh. 30 - Prob. 5PCh. 30 - Prob. 6PCh. 30 - Prob. 7PCh. 30 - Prob. 8PCh. 30 - Prob. 9PCh. 30 - Prob. 10P
Ch. 30 - Prob. 11PCh. 30 - Prob. 12PCh. 30 - Prob. 13PCh. 30 - Prob. 14PCh. 30 - Prob. 15PCh. 30 - Prob. 16PCh. 30 - Prob. 17PCh. 30 - Prob. 18PCh. 30 - Prob. 19PCh. 30 - Prob. 20PCh. 30 - Prob. 21PCh. 30 - Prob. 22PCh. 30 - Prob. 23PCh. 30 - Prob. 24PCh. 30 - Prob. 25PCh. 30 - Prob. 26PCh. 30 - Prob. 27PCh. 30 - Prob. 28PCh. 30 - Prob. 29PCh. 30 - Prob. 30PCh. 30 - Prob. 31PCh. 30 - Prob. 32PCh. 30 - Prob. 33PCh. 30 - Prob. 34PCh. 30 - Prob. 35PCh. 30 - Prob. 36PCh. 30 - Prob. 37PCh. 30 - Prob. 38PCh. 30 - Prob. 39PCh. 30 - Prob. 40PCh. 30 - Prob. 41PCh. 30 - Prob. 42PCh. 30 - Prob. 43PCh. 30 - Prob. 44PCh. 30 - Prob. 45PCh. 30 - Prob. 46PCh. 30 - Prob. 47PCh. 30 - Prob. 48PCh. 30 - Prob. 49PCh. 30 - Prob. 50PCh. 30 - Prob. 51PCh. 30 - Prob. 52PCh. 30 - Prob. 53PCh. 30 - Prob. 54PCh. 30 - Prob. 55PCh. 30 - Prob. 56PCh. 30 - Prob. 57PCh. 30 - Prob. 58PCh. 30 - Prob. 59P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- What is the average magnitude of the Poynting vector 5.00 mi from a radio transmitter broadcasting isotropically (equally in all directions) with an average power of 250 kW?arrow_forwardA parallel-plate capacitor has a plate area of A=0.250m2 and a separation of 0.0100 in. What must be must be the angular frequency w for a voltage V(t)=V0sint with V0=100V to produce a maximum displacement displacement current of 1.00 A between the plates?arrow_forwardtake ur timearrow_forward
- Operation of the pulse oximeter (see previous problem).The transmission of light energy as it passes througha solution of light - absorbing molecules is described by theBeer–Lambert law I = I010-εCL or log10 (I/I0) = -εCL which gives the decrease in intensity I in terms of the distance Lthe light has traveled through a fluid with a concentration Cof the light - absorbing molecule. The quantity ε is called theextinction coefficient, and its value depends on the frequencyof the light. (It has units of m2/mol.) Assume the extinctioncoefficient for 660 - nm light passing through a solutionof oxygenated hemoglobin is identical to the coefficient for940 - nm light passing through deoxygenated hemoglobin.Also assume 940 - nm light has zero absorption (ε = 0) inoxygenated hemoglobin and 660 - nm light has zero absorptionin deoxygenated hemoglobin. If 33% of the energy ofthe red source and 76% of the infrared energy is transmittedthrough the blood, what is the fraction of hemoglobin that…arrow_forwardhelp pleasearrow_forwardOperation of the pulse oximeter (see previous problem). The transmission of light energy as it passes through a solution of light-absorbing molecules is described by the Beer−Lambert law which gives the decrease in intensity I in terms of the distance L the light has traveled through a fluid with a concentration C of the light-absorbing molecule. The quantity ε is called the extinction coefficient, and its value depends on the frequency of the light. (It has units of m2/mol.) Assume the extinction coefficient for 660-nm light passing through a solution of oxygenated hemoglobin is identical to the coefficient for 940-nm light passing through deoxygenated hemoglobin. Also assume 940-nm light has zero absorption (ε = 0) in oxygenated hemoglobin and 660-nm light has zero absorption in deoxygenated hemoglobin. If 33% of the energy of the red source and 76% of the infrared energy is transmitted through the blood, what is the fraction of hemoglobin that is oxygenated?arrow_forward
- Suppose the maximum safe average intensity of microwaves for human exposure is taken to be 2.00 W/m?. If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away, rmina must you be to be exposed to an average intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. min m What is the maximum electric field strength Eo at this distance? The permittivity of free space is €o = 8.854 × 10-12 C²/(N-m²). The speed of light is e = 3.00 x 10° m/s. Eo V/m Note: Early radar units leaked more than modern ones do. This caused identifiable health problems, such as cataracts, for people who worked near them. Question Credit: OpenStax College Physicsarrow_forwardThe magnetic field of a uniform plane wave propagating in the +Y direction in sea water {Ɛ, = 100, µ, = 1,0 = 4} at y = 0 is H = a, cos(1010n t – 0. 5ny) (A/m). Determine: a) The attenuation constant, the phase constant and the intrinsic impedance b) The phase velocity, the wavelength and the skin depth c) Write the expressions of E(y, t) & H(y,t)at y = 0.75 (m)arrow_forwardWhile sailing in the ocean a sailor sees a lighthouse, but doesn’t know how far away it is. The sailor anchors their boat and measures the inten- sity of the light. They then lift their achor and sail 500 m closer to the lighthouse, noting that the intensity is now double their previous mea- surement. Given that the lamp in the lighthouse remains at a constant power and is far enough away to be considered a point source, calculate how far the lighthouse is from the sailor’s initial position.arrow_forward
- Nonearrow_forwardWhat is the frequency of infrared light emitted by an LED in a remote control with a wavelength of 906 nm if the speed of light is given as c= 3.00 x 108 m s-1. Give your answer in Hz to an appropriate number of significant figures.arrow_forwardRadio waves and microwaves are used in therapy to provide “deep heating” of tissue because the waves penetrate beneath the surface of the body and deposit energy. We define the penetration depth as the depth at which the wave intensity has decreased to 37% of its value at the surface. The penetration depth is 15 cm for 27 MHz radio waves. For radio frequencies such as this, the penetration depth is proportional to √λ, the square root of the wavelength. If the frequency of the radio waves is increased, the depth of penetrationA. Increases. B. Does not change. C. Decreases.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Polarization of Light: circularly polarized, linearly polarized, unpolarized light.; Author: Physics Videos by Eugene Khutoryansky;https://www.youtube.com/watch?v=8YkfEft4p-w;License: Standard YouTube License, CC-BY