Current Attempt in ProgressThe figure shows the popular dish antenna that receives digital TV signals from a satellite. The average intensity of theelectromagnetic wave that carries a particular TV program is S = 7.60 × 10-14 W/m², and the circular aperture of the antenna has radiusof r = 15.6 cm. (a) Determine the electromagnetic energy delivered to the dish during a one-hour program. (b) What is the averageenergy density of the electromagnetic wave?Area AkTV signal(a) Number i(b) Number ieTextbook and MediaUnitsUnitsx= ct-

Given values: Time, t=1 h=3600 sRadius, r=15.6 cmArea, A=πr2=π×15.6×10-2 m2=0.076415 m2Intensity,…

Answered: Current Attempt in Progress The figure…

Similar questions

On its highest power setting, a certain microwave oven projects 0.75 kW of microwaves onto a 20 by 35 cm area. (a) What is the intensity in W/m2? W m² (b) Calculate the peak electric field strength Eo in these waves. V m (c) What is the peak magnetic field strength Bo? T Submit Question
An electromagnetic wave in vacuum has an electric field amplitude of 510 V/m. Calculate the amplitude of the corresponding magnetic field. nT
16. Review. Model the electromagnetic wave in a microwave oven as a plane traveling wave moving to the left, with an intensity of 25.0 kW/m². An oven contains two cubical con. tainers of small mass, each full of water. One has an edge length of 6.00 cm, and the other, 12.0 cm. Energy falls perpendicularly on one face of each container. The water in the smaller container absorbs 70.0% of the energy that falls on it. The water in the larger container absorbs 91.0%. That is, the fraction 0.300 of the incoming microwave energy passes through a 6.00-cm thickness of water, and the fraction (0.300)(0.300) = 0.090 passes through a 12.0-cm thickness. Assume a negligible amount of energy leaves either container by heat. Find the temperature change of the water in each container over a time interval of 480 s. %3D
www WiFi (microwaves) waves travel 100m in the x-direction from a transmitter to a computer. The maximum electric field at the computer is 77.5mV/m and points in the z-direction. The frequency of the WiFi system is 2.4GHz. a. At the computer, the magnetic field points in what direction? b. At the computer, what is magnitude of the maximum magnetic field? c. How much power is being transmitted by the WiFi transmitter? d. wwwmm How much time does it take for waves to travel from the WiFi transmitter to the computer?
K The maximum magnitude of the electric field in an electromagnetic wave is 20 V/m. What is the maximum magnitude of the magnetic field in this wave? T Submit Answer Tries 0/2
An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area transmitted is S = 56.5 W/m2, and the surface is a perfect absorber, what is the radiation pressure (in nPa) on the surface? nPa Need Help? Read It the the line that through the tu
An electromagnetic wave is normally incident on a flat surface. Assuming the power per unit area transmitted is S = 61.4 W/m², and the surface is a perfect absorber, what is the radiation pressure (in nPa) on the surface? nPa Need Help? Read It
High–power lasers in factories are used to cut through cloth and metal (see figure below). One such laser has a beam diameter of 2.00 mm and generates an electric field having an amplitude of 0.350 MV/m at the target. a) Find the amplitude of the magnetic field produced. b) Find the intensity of the laser. c) Find the power delivered by the laser.
What is correct about an electromagnetic wave in vacuum (or free space)? Group of answer choices The amplitude of the electric and magnetic fields are the same. The net energy in the electric and magnetic fields are the same. The energy densities in the electric and magnetic fields are the same. When in the vacuum, electromagnetic waves of higher frequencies travel faster than their lower frequency counterpart.
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