A Question 4What is one difference between an electromagnetic wave and a mechanical wave?A mechanical wave can travel through a vacuum. An electromagnetic wave must have a medium to travel through.BAn electromagnetic wave can travel through a vacuum. A mechanical wave must have a medium to travel through.An electromagnetic wave moves parallel to the direction of the wave's travel. A mechanical wave can move only perpendicular to the direction of the wave's travel.DAn electromagnetic wave moves perpendicular to the direction of the wave's travel. A mechanical wave can move only parallel to the direction of the wave's travel.O Time Remai©2021 Illuminate EducationTM Inc.0%%2334

The electromagnetic wave is a transverse wave and the mechanical wave is a longitudinal wave. An…

Answered: O Question 4 What is one difference…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Q17.3 There is a sinosodal electromagnetic wave. It propagates empty space. it does this in the ty direction. The electrical field is directed along the +x axis and has a magnitude of 5.00V/m at a specific position and time. At this instant in time and position in space please calculate the following: a. The magnetic field vector b. The power transmitted per unit of area
B1. The energy flow rate (power per unit area) in an electromagnetic wave in vacuum is given by the Poynting vector S=- EXB. The magnitude of the time-averaged value of S is called the intensity I=Sy . Calculate the intensity of a sinusoidal plane electromagnetic wave traveling in vacuum in the +x -direction, described by E (x,t)=ŷ Emax Cos(kx-wt) B(x,t)=î B, cos (kx – wt) max E max=cBmax
Police use radar guns and the Doppler effect to catch speeders. The figure below illustrates a moving car approaching a stationary police car. A radar gun emits an electromagnetic wave that reflects from the oncoming car. The reflected wave returns to the police car with a frequency (measured by on-board equipment) that is different from the emitted frequency. One such radar gun emits a wave whose frequency is 8.0 x 10° Hz. When the speed of the car is 21.0 m/s and the approach is essentially head-on, what is the difference between the frequency of the wave returning to the police car and that emitted by the radar gun? Number Reflected electromagnetic Units H₂ Outgoing electromagnetic wave gus hot 1.jpe
4. An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is 1.20 x 10° W/m2. What is the rms value of the electric field in the electromagnetic wave emitted by the laser? N/C
An electromagnetic wave strikes a 1.56-cm² section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 5.09 x 10-4 T. How long does it take for the wave to deliver 2270 J of energy to the wall? Number i Units Electromagnetic wave
Is it possible for an electromagnetic wave to travel through a vacuum? Explain. Yes, unlike a mechanical wave the electromagnetic wave does NOT require a medium in which to propagate.No, like a mechanical wave the electromagnetic wave requires a medium in which to propagate. There is not enough information to determine whether the wave propagates or not.
An electromagnetic wave strikes a 1.16-cm² section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.36 × 10-4 T. How long does it take for the wave to deliver 1670 J of energy to the wall? Number i Electromagnetic wave Units
Please solve and answer the question correctly please. Be sure to give the correct units and answers. Thank you!!
Electromagnetic waves are a form of radiation that propagates through space and the atmosphere without the need for a material medium. They consist of oscillating electric and magnetic fields that alternate perpendicular to each other and to the direction of propagation. Electromagnetic waves emitted by transmission antennas, such as radio antennas, travel through the atmosphere at the speed of light and can be captured by receiving devices, such as radios, televisions and other electronic devices, allowing distance communication and the transmission of information. Statement: Radio station antennas emit electromagnetic waves that propagate in the atmosphere at a speed of around 3.0x10^5 km/s and with frequencies that vary from one station to another. If a radio emits a wave of frequency 101.5 MHz then its wavelength is approximately equal to: Question options: a) 0.31 m b) 5.15m c) 3.63m d) 1.52 m e) 2.96 m
An electromagnetic wave strikes a 1.22-cm² section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 4.58 × 10-4 T. How long does it take for the wave to deliver 1140 J of energy to the wall? Number i Units Electromagnetic wave
A plane electromagnetic wave is traveling in a vacuum. The magnetic field is directed along the z-axis and given by: B, = 3.0µT sin ((1.0 × 107 )x - (3.0 × 1015 )t ) a) Determine the wavelength , of the wave. b) What is the frequency, f, of the wave in Hertz? c) Determine the maximum strength of the B-field. d) Determine the maximum strength of the E-field and it direction. e) Can you find a time and place when the B-field is zero? f) What is the strength of the E-field when the B-filed is zero?
The average intensity a distance d₁ = 1.6 m from an omni-directional light bulb is l₁ = 1.3 W/m². (a) Write a symbolic expression for the intensity a distance d₂ = 2.5 m from the same bulb, in terms of ₁, d₁ and d₂, and calculate its numeric value. 1, ₂ W/m² (Don't worry about the font -- use 11 for 1.) (b) Calculate the maximum output power of the light bulb. Pmax = W

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