3) A radio antenna emits radio waves uniformly in all directions. The average intensity of the emitted waves is 2.00x10-6 W/m? at a distance of 20.0 km from the antenna. a. (3 points) What is the amplitude of the wave's magnetic field at a distance of 20.0 km from the antenna?

3) A radio antenna emits radio waves uniformly in all directions. The average intensity of the emitted waves is 2.00x10-6 W/m? at a distance of 20.0 km from the antenna. a. (3 points) What is the amplitude of the wave's magnetic field at a distance of 20.0 km from the antenna?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 49P: A plane electromagnetic wave travels northward. At one instant, its electric field has a magnitude...

See similar textbooks

Related questions

Q: 1) If the magnetic field of an electromagnetic wave is in the page plane horizontal to the right and…

A: 1. The direction of electromagnetic wave can be find by pointing the fingers of the right hand in…

Q: An electromagnetic wave strikes a 1.61-cm2 section of wall perpendicularly. The rms value of the…

A: Here given an electromagnetic wave strikes a 1.61 cm² section of wall perpendicularly . The magnetic…

Q: b) An electromagnetic wave is travel in free space in the x-axis direction as shown in Figure 7…

A: Given data: Frequency of the wave, f = 50 MHz = 50×106 Hz Maximum value of electric field, Emax=800…

Q: A small helium-neon laser emits red visible light with a power of 6 mW in a beam that has a diameter…

Q: A green laser pointer has a power output of 104 mW. (a) If the laser beam is projected onto a…

Q: •12 In a plane radio wave the maximum value of the electric field component is 5.00 V/m. Calculate…

Q: A radio transmitter broadcasts 4.5 kW of power to a 3.2 m diameter ceceiver. Calculate the…

Q: In what directions is it possible that the wave is traveling? (Select all that apply.) O The -y…

Q: 9. QUESTION 9 Which of these best describes an electromagnetic wave propagating through space?…

Q: High power lasers in factories are used to cut through cloth and metal. One such laser has a beam…

Q: Problem 31.53 The average intensity of a particular TV station's signal is 1.0 x 10-13 W/m? when…

A: a) power=AI=π4d2I Energy=p∆t=π4d2I∆t =π40.3321x10-136x3600 =1.85x10-10J

Q: 41.) Which of the following is true for AM radio waves? a. The typical frequency range is in the…

Q: Explain why the amplitude of an Electromagnetic signal generally decreases with distance from the…

A: Actually, the amplitude of an electromagnetic wave is independent of distance when it is travel in…

Q: If the electric field emitted by a radio tower has an amplitude of 252 V/m, what is the amplitude of…

Q: The maximum allowed leakage of microwave radiation from a microwave oven is 5.0 mW/cm2. If microwave…

A: The power density of electromagnetic waves in free-space is given by, Pd=Erms2Z0 Here, Pd is the…

Q: termine the amplitude of the electric field. What is its direction at a moment when the magnetic…

Q: The maximum magnetic field strength of an electromagnetic field is 8 x 10-6 T. Calculate the maximum…

A: The question is related to electro megnetic field theory.

Q: Which of the following electromagnetic waves has the lowest frequency? a. visible light b. X-rays…

A: EM waves are classified according to their frequency or wavelength. Frequency of a wave is the…

Q: If the electric field in an electromagnetic wave is increasing inmagnitude at a particular time, is…

A: According to Maxwell equation, in an electromagnetic field,the electric field and the magnetic field…

Q: 4. The Earth reflects approximately 38.0% of the incident sunlight from its clouds and surface. (a)…

A: Pressure due to the reflected light,

Q: 7. The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with…

A: The intensity relation is given in terms of total energy, time, and area as I=UAt

Q: 81 The magnetic component of a polarized wave of light is B, = (4.0 x 10-6 T) sin[(1.57 x 10' m-1)y…

A: a) The magnetic component of polarized wave of light is parallel to the z-axis. b) The required…

Q: A satellite in geostationary orbit is used to transmit data via electromagnetic radiation. The…

A: An isotropic power output,

Q: Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1.4 kW/m2.…

Q: A sinusoidal plane electromagnetic wave travels in a vacuum in the x direction as shown in the…

Q: A digital cell phone emits 0.60Wattsof 1.9GHz= 1.9×109Hzradio waves. (Assume thewaves are passing…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A transmitter on the earth’s surface radiates sinusoidal radio waves equally in all directions above…

A: Given: The airplane is flying at an altitude of d=12.5 km. The electric field amplitude is E=0.360…

Q: Current Attempt in Progress Radiation from the Sun reaching Earth (just outside the atmosphere) has…

A: I= 1.44 kW/m2 c= 2.998×108m/s r= 6370 km

Q: . WHAT ARE THE COMPONENTS OF AN ELECTROMAGNETIC WAVE THAT IS A TRANSVERSE WAVE ? A. ELECTRIC AND A…

A: 10. We need to tell the components of electromagnetic waves A) Electric and magnetic component.…

Q: An industrial laser is used to burn a hole through a piece of metal. The average intensity of the…

Q: 2. The magnetic field in a travelling electromagnetic wave has a peak value of 20 nT. The peak value…

Q: On February 9, 1986, Comet Halley was at its closest point to the Sun, about 9.0 × 1010 m from the…

A: (a) The solar radiation’s intensity is the average solar power per unit area. Thus, determine the…

Q: Radio station WCCO in Minneapolis broadcasts at a frequency of 980 kHz. At a point, some distance…

A: Dear student, this question contains more than three sub-parts. As per our guidelines, we will…

Q: 1- calculate the intensity?, if electromagnetic wave moving through space has electric field given…

Q: 31) In an electromagnetic wave in free space, the electric and magnetic fields are A) parallel to…

A: Electromagnetic wave is the wave that is propagated by simultaneous periodic variations of electric…

Q: A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window…

A: Given data: Area of window is, A=0.500 m2. Root mean square value of electric field is, Erms.=0.0400…

Q: 32) Which of the following statements about electromagnetic waves in free space are true? (There…

A: given data:

Q: To maximize the magnitude of the current induced in a receiving antenna, should the antenna be…

A: An antenna is a device that provides a transition between guided electromagnetic waves in wires and…

Q: maximum value of the electric field in a light wave is 800 N/C. Calculate the rms value of the…

A: E =cB

Q: 174. An electromagnetic wave in a vacuum traveling in the +x direction generated by a variable…

A: 174. The equation of the resultant magnetic field component of the wave is, B=B0cosky+ωt Find the…

Q: If the electric field emitted by a radio tower has an amplitude of 285 V/m, what is the amplitude of…

Question

3) A radio antenna emits radio waves uniformly in all directions. The average intensity of the
emitted waves is 2.00x10-6 W/m? at a distance of 20.0 km from the antenna.
a. (3 points) What is the amplitude of the wave's magnetic field at a distance of 20.0
km from the antenna?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

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 maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 5.00104T (about 10 times the Earth’s)?
Integrated Concepts Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength 1.50 (m. (a) If the lamp’s 200W output is focused on a person’s Shoulder, over a circular area 25.0 cm in diameter, what is the intensity in W/m2? (b) What is the peak electric field strength? (c) Find the peak magnetic field strength. (d) How long will it take to increase the temperature of the 4.00-kg shoulder by 2.00°C, assuming no other heat transfer and given that its speci?c heat is 3.47103J/kgC ?
During normal bee?ng, the heat creates a maximum 4.00mv 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?
Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.250 mw. (a) If such a laser beam is projected onto a circular spot 1.130 mm in diameter, what is its intensity? (b) Find the peak magnetic field strength. (c) Find the peak electric field strength.
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 or infrared and X-rays).
Show that for a continuous sinusoidal electromagnetic wave, the peak intensity is twice the average intensity (I0 = 2Iave), using enter the fact that E0=2Erms, or B0=2Brms, where rms means average (actually root mean square, a type of average).
A plane electromagnetic wave travels northward. At one instant, its electric field has a magnitude of 6.0 V/m and points eastward. What are the magnitude and direction of the magnetic field at this instant?
A radio wave transmits 25.0 W/m2 of power per unit area. A flat surface of area A is perpendicular to the direction of propagation of the wave. Assuming the surface is a perfect absorber, calculate the radiation pressure on it.
What is the maximum electric field strength in an electromagnetic wave that has a maximum magnetic field strength of 5.00104 (about 10 times Earth's magnetic field)?
Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.00 W/m2. (a) If a radar unit leaks 10.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away must you be to be exposed to an intensity considered to be safe? Assume that the power spreads uniformly over the area of a sphere with no complications from absorption or reflection. (b) What is the maximum electric field strength at the safe intensity? (Note that early radar units leaked more than modern ones do. This caused identi?able health problems, such as cataracts, for people who worked near them.)