The electric field of an electromagnetic wave in a vacuum is Ey (17.0 V/m)cos((2.78 x 108)z = where z is in m and t is in s. wt). For help with math skills, you may want to review: Rearrangement of Equations Involving Multiplication and Division For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Fields in a microwave oven. Palla What s the wave's wavelength? Express your answer with the appropriate units. A= Value Submit Request Answer Units Part B What is the wave's frequency? Express your answer with the appropriate units. f= Value Submit Request Answer ? ? Units Part C What is the wave's magnetic field amplitude? Express your answer with the appropriate units. B= Value Submit Request Answer ? Units 17

The electric field of an electromagnetic wave in a vacuum is Ey (17.0 V/m)cos((2.78 x 108)z = where z is in m and t is in s. wt). For help with math skills, you may want to review: Rearrangement of Equations Involving Multiplication and Division For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Fields in a microwave oven. Palla What s the wave's wavelength? Express your answer with the appropriate units. A= Value Submit Request Answer Units Part B What is the wave's frequency? Express your answer with the appropriate units. f= Value Submit Request Answer ? ? Units Part C What is the wave's magnetic field amplitude? Express your answer with the appropriate units. B= Value Submit Request Answer ? Units 17

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 46P: A plane electromagnetic wave of frequency 20 GHz moves in the positive y-axis direction such that...

See similar textbooks

Similar questions

If you wish to detect details of the size of atoms (about 0.2 nm) with electromagnetic radiation, it must have a wavelength of about this size. (a) What is its frequency? (b) What type of electromagnetic radiation might this be?
How does the intensity of an electromagnetic wave depend on its electric field? How does it depend on its magnetic field?
A plane electromagnetic wave of frequency 20 GHz moves in the positive y-axis direction such that its electric field is pointed along the z-axis. The amplitude of the electric field is 10 V/m. The start of time is chosen so that at t = 0, the electric field has a value 10 V/m at the origin. (a) Write the wave function that will describe the electric field wave, (b) Find the wave function that will describe the associated magnetic field wave.
Illustrate that the size of details of an object that can be detected with electromagnetic waves is related to their wavelength, by comparing details observable with two different types (for example, radar and visible light).
Check Your Understanding What conclusions did our analysis of Maxwell's equations lead to about these properties of a plane electromagnetic wave: (a) the relative directions of wave propagation, of the E field, and of B field, (b) the speed of travel of the wave and how the speed depends on frequency, and (c) the relative magnitudes of the E and B fields.
A 1-W lightbulb emits 5% of its energy as electromagnetic radiation. What is the radiation pressure on an absorbing sphere of radius 10 m that surrounds the bulb?
The magnetic field of a plane electromagnetic wave moving along the z axis is given by B =B0(coskz+t) j , where B0=5.001010 and k=3.10102m-1 . (a) Write an expression for the electric field associated with the wave. (b) What are the frequency and the wavelength of the wave? (C) What is its average Poynting vector?
At the top of Earth’s atmosphere, the time-averaged Porting vector associated with sunlight has a magnitude of about 1.4W/m2 . (a) What are the maximum values of the electric and magnetic fields for a wave of this intensity? (b) What is the total power radiated by the sun? Assume that the Earth is 1.51011m from the Sun and that sunlight is composed of electromagnetic plane waves.
What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c) C=AB , (d) C=AB , (e) C+2A=B , (f) C=AB , (g) AB=AB , (h) C=2AB , (i) C=A/B , and (j) C=A/B .
A 150-W lightbulb emits 5% of its energy as electromagnetic radiation. What is the magnitude of the average Poynting vector 10 m from the bulb?
During normal beating, the heart creates a maximum 4.00-mV potential across 0.300 m of a person’s chest, creating a 1.00-Hz electromagnetic wave. (a) What is the maximum electric field strength created? (b) What is the corresponding maximum magnetic field strength in the electromagnetic wave? (C) What is the wavelength of the electromagnetic wave?
Lasers can be constructed that produce an extremely high intensity electromagnetic wave for a brief time—called pulsed lasers. They are used to initiate nuclear fusion, for example. Such a laser may produce an electromagnetic wave with a maximum electric field strength of 1.001011 V/m for a time of 1.00 ns. (a) What is the maximum magnetic field strength in the wave? (b) What is the intensity of the beam? (c) What energy does it deliver on an 1.00-mm2 area?