Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
expand_more
expand_more
format_list_bulleted
Question
Chapter 30, Problem 8P
To determine
Theproof that the unit of pointing vectors is
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The intensity of a standing electromagnetic wave is given by Ey(x,t)=2E0cos(kx)cos(wt), Bz(x,t)=2B0sin(kx)sin(wt). Calculate the Poynting vector SS and the time average of SS for this standing wave.
Q: An AM radio signal propagating in free space has:
E = Eo sin(1200πt - βz)ax
H= (Eo / η)*sin(1200πt- βz)az
Express these in phasor form and detrmine β and η such that the fields Satisfy Maxwell’s equations.
Problem 9:
Chapter 30 Solutions
Physics for Scientists and Engineers, Vol. 1
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
Similar questions
- A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a giveninstant, the electric field of the wave is given by = (0.082 V/m) . What is the Poynting vector at thepoint P at that instant? (c = 3.0 x 10^8 m/s, ?arrow_forwardA star’s spectrum emits more radiation with a wavelength of 690.0 nm than with any other wavelength. If the star is 9.78 ly from Earth and its radius is 7.20 × 108 m, what will an Earth-based observer measure for this star’s intensity? Stars are nearly perfect blackbodies. (Note: ly stands for light-years.) Answer in W/m2arrow_forwardConsider a sinusoidal electromagnetic wave of the form Ex = c * By = E0 * sin [2 * pi * f * (t - z/c)], where E0 and f are constants. Assume that Ex and By do not depend on x or y, and that the other components of Evector and Bvector are zero. Show that this wave satisfies Maxwell's equations in empty space.arrow_forward
- The electric field strength in the region 0arrow_forwardA 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 ˆj V/m. What is B at this point?arrow_forwardỸ(10³) Vr Q2: A charged square parallel-plate capacitor with uniform electric field E between its plates, which are separated by a distance d =1 mm and of width w= 10 cm, placed in a uniform magnetic field intensity H = -ỹ (0.3) A/m. Find the electromagnetic momentum stored in the space between the platesarrow_forwardAn electromagnetic plane wave in air is propagating in the +z direction. Its peak E-field vector is at 45 degrees to the x, y axes, and given by E0 = (2000, 2000, 0) V m-1. What is the corresponding vector for the H field, in Amps m-1?arrow_forwardStart with the definition of H, and use a Maxwell relation to derive the followingequation:arrow_forwardProve, for a plane electromagnetic wave that is normally incident on a flat surface, that the radiation pressure on the surface is equal to the energy density in the incident beam. (This relation between pressure and energy density holds no matter what fraction of the incident energy is reflected.)arrow_forwardThe electric field of an electromagnetic wave at a point is given as E V(240n) (V/m] sin[n*10y-1041). What is the irradiance of the electromagnetic wave? (Units in W/m? and approximate the answer to one decimal point or lower) Answer:arrow_forwardThe H-vector for an oscillating electric dipole is given by H= {[cp,ei@(t- rle)]/4tr?}[i(X/r) - 1] sine o. Show that the phase velocity of this wave is v= c[1+ (X/r)], and thus that v> c.arrow_forwardLast July 23, 2020, China launched its Tianwen-1 space mission to bring their rover, named Zhurong, to Mars. Zhurong landed on Mars on May 14, 2021. Mars moves at 27 km/s with respect to Earth. If an Earth-based observer shines a laser at Zhurong and is reflected back to Earth, the Earth-based observer will measure the speed of the reflected beam to be O C O c + (27000 m/s) O c (27000 m/s) O c/ (27000 m/s)arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher: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
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning