An AM radio listener is located 5.0 km from the radio station. If he is listening to the radio at the frequency of 660 kHz, how many wavelengths fit in the distance from the station to his house?A. 11           B. 22           C. 33           D. 132

Electromagnetic radiation in the Ultraviolet (A) range has a wavelength of 340 nm and a speed of 3.0 x 10° m/s. What is the frequency of this wave? O 8.8 x 104 Hz O 1.1 x 10-6 Hz O 1.1x 1015 Hz 0 8.8 x 105 Hz O none of these 19 20 21 22 23 24 25 26 27 28

In a single component of an electromagnetic plane wave, what is the relative orientation of the vector directions of the electric field, the magnetic field, and the propagationg direction?   a. The electric and magnetic fields are perpendicular to each other and are both parallel to the propagation direction.   b. The electric and magnetic fields are parallel to each other and are both parallel to the propagation direction.   c. The electric field direction, magnetic field direction, and propagation direction can be oriented independent of one another and in any direction.   d. The electric and magnetic fields are parallel to each other and are both perpendicular to the propagation direction.   e. The electric and magnetic fields are perpendicular to each other and are both perpendicular to the propagation direction.

Which of the following terms described the direction in which an electromagnetic wave oscillates?   a. The polarization   b. The frequency   c. The amplitude   d. The wavelength   e. The wave speed

The magnetic field of an electromagnetic wave is given by B(x,t) = (0.60 μT) sin [(7.00 × 10° m¯)x-(2.10 x 10 s¯)] Calculate the amplitude Eo of the electric field. Calculate the speed v. Calculate the frequency f. Calculate the period T. Calculate the wavelength A. N/C Eo D= m/s s = Hz T= S 1= E

An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.75 x 10-6 T. What is the intensity S of the wave? S = i ! J/(s·m^2) V eTextbook and Media 4

A certain material has a dielectric permittivity eo and magnetic permeability 3,40. An electromagnetic (EM) wave with frequency 430 x 101² Hz enters this material. What is the wave speed inside the material? C. 2.997 × 10° m/s D. 8.126 x 108 m/s A. 8.216 x 107 m/s B. 1.095 x 10$ m/s

The frequency and wavelength of EM waves can vary over a wide range of values. Scientists refer to the full range of frequencies that EM radiation can have as the electromagnetic spectrum. Electromagnetic waves are used extensively in modern wireless technology. Many devices are built to emit and/or receive EM waves at a very specific frequency, or within a narrow band of frequencies. Here are some examples followed by their frequencies of operation: • garage door openers: 40.0 MHz • standard cordless phones: 40.0 to 50.0 MHz baby monitors: 49.0 MHz • FM radio stations: 88.0 to 108 MHz • cell phones: 800 to 2100 MHz • Global Positioning System: 1227 to 1575 MHz • microwave ovens: 2450 MHz • wireless local area networks: 2.4 GHz and 5.0 GHz Part B Which of the following statements correctly describe the various applications listed above? Check all that apply. ► View Available Hint(s) None of these technologies use radio waves. None of these technologies use lower-frequency microwaves.…

Depending on the situation, a cell phone will project between 0.02 W and 2 W of radiowave radiation. While using your phone, you measure the output and find that your phone is producing radiowaves at a rate of 0.36 Watts.A) At a distance of 15 cm, what is the average intensity of these waves?1.27 W/m2   Computer's answer now shown above. You are correct.Your receipt no. is 164-1757  Previous Tries B) What is the peak intensity of the wave at this distance?2.55 W/m2   Computer's answer now shown above. You are correct.Your receipt no. is 164-4292  Previous Tries c) Calculate the peak electric field strength E0 in these waves. N/C   Tries 0/2   D)Calculate the peak magnetic field strength B0 in these waves.  ANSWER C AND D

What is the relationship between the electromagnetic wave frequency and the distance that it can cover? Select one: a. The lower the frequency, the shorter the distance it can travel. b. The electromagnetic wave frequency does not affect the distance travelled by the wave. c. The higher the frequency, the shorter the distance it can travel.