College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Related questions
Concept explainers
Question
You have decided to increase the detection range of your iphone14 with a highgain, directional parabolic dish antenna to be able to access more distant cell towers (somewhat more difficult to get into your pocket or purse, however). A 3m-diameter parabolic dish is readily available commercially, and the desired sinusoidal radio signal specification is for Emax = 0.10 µV/m. Assume the antenna absorbs all the
a. What is the amplitude of the magnetic field in this signal?
b.What is the intensity, I, of the radiation received by the antenna?
c. What is the power received by the antenna?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps with 4 images
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
- The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW. (a) If such a laser beam is projected onto a circular spot 1.30 mm in diameter, what is its intensity? 1.88e2 W/m2 (b) Find the peak electric field strength. 1.255e-6 What is the relationship between intensity and electric field strength? V/m (c) Find the peak magnetic field strength. 3.765e-6 What is the relationship between electric field strength and magnetic field strength in an electromagnetic wave? Tarrow_forwardWhat inductance must be connected to a 25 pF capacitor in an oscillator capable of generating 490 nm (i.e., visible) electromagnetic waves?arrow_forwardThe average intensity within the 3.4-mm radius circular spot illuminated by a helium-neon laser pointer is 53.5 W/m². (a) What is the peak amplitude of the beam's electric field component? Emax = |0.53 N/C (b) What is the rms amplitude of the beam's magnetic field component? Brms = 0.00125 X HT (c) What is the average output power of the laser? Pav = 7.77 avg x mWarrow_forward
- A parabolic satellite dish is somewhat bowl-shaped, but the incoming signal is captured across its circular cross-section. A parabolic satellite dish with radius, R = 1.5 m, picks up a TV signal with a peak electric field strength of 74 mV/m. (a) What is the average intensity of the incoming signal? W/m² (b) What is the average (total) power received by the satellite dish? W R (c) What is the average output power of the orbiting transmitter if it broadcasts uniformly over an area of 1.5 x 10¹3 m²? MWarrow_forwardAn AM radio transmitter broadcasts 45 kW of power uniformly in all directions.Randomized VariablesP = 45 kWd = 29 km Part (a) Assuming all of the radio waves that strike the ground are completely absorbed, and that there is no absorption by the atmosphere or other objects, what is the intensity 29 km away? Part (b) What is the maximum electric field strength at this distance, in N/C?arrow_forwardAssume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.49 mW. (a) If such a laser beam is projected onto a circular spot 1.3 mm in diameter, what is its intensity? I= W m (b) Find the peak magnetic field strength. Bo= T (c) Find the peak electric field strength. E₁= V marrow_forward
- A quarter-wave monopole radio antenna (also called a Marconi antenna) consists of a long conductor of one quarter the length of the transmitted wavelength. The lower end of the antenna is connected to a conducting ground plane (often simply the Earth) which reflects the transmitted signal, creating an effective antenna length of a half wavelength. (a) What must be the height of the antenna (in m) for a radio station broadcasting at 569 kHz? (b) What must be the height of the antenna (in m) for radio stations broadcasting at 1,750 kHz?arrow_forwardA short vertical transmitting antenna erected at the surface of a perfectly conducting earth transmits a 5 kW of power of wavelength A. Find the value of the electrie field strength at a radio receiver 2 km away and stationed at the earth surface. (No obstacles in the area.)arrow_forwardAn AM radio transmitter broadcasts 54.0 kW of power uniformly in all directions. (a) Assuming all of the radio waves that strike the ground are completely absorbed, and that there is no absorption by the atmosphere or other objects, what is the intensity (in W/m2) 26.0 km away? (Hint: Half the power will be spread over the area of a hemisphere.) W/m2 (b) What is the maximum electric field strength (in V/m) at this distance? V/marrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press 
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON