The maximum amplitude of the magnetic field in an electromagnetic wave is tripled, by what factor does the energy density of the wave change?   Question 4 options:   The energy density of the wave increases by a factor of nine   The energy density of the wave increases by a factor of three   The energy density of the wave increases by a factor of two   The energy density of the wave does not change.   None of the other responses are correct.

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.

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 2.1 x 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.19 m². How much energy does this wave carry through the window during a 60-s phone call? Number i 14 eTextbook and Media Units

For a certain electromagnetic wave in free space, at one instant the electric field vector points in the +z direction while the magnetic field vector points in the +x direction, as shown in the figure. In what direction is this wave traveling? B E +y +z +x -X -y

The intensity of solar radiation that falls on a detector on Earth is 1.00 kW/m². The detector is a square that measures 6.11 m on a side and the normal to its surface makes an angle of 30.0° with respect to the Sun's radiation. How long will it take for the detector to measure 436 kJ of energy? S

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

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

The company where you work has obtained and stored five lasers in a supply room. You have been asked to determine the intensity of the electromagnetic radiation produced by each laser. The lasers are marked with specifications, but unfortunately different information is given for each laser: Laser A: power = 2.6 W; diameter of cylindrical beam = 2.6 mm Laser B: amplitude of electric field = 480 V/m Laser C: amplitude of magnetic field = 8.7 x 10-6 T Laser D: diameter of cylindrical beam = 1.8 mm; force on totally reflecting surface = 6.0 x 10-8 N Laser E: average energy density in beam = 3.0 x 10-7 J/m3 Calculate the intensity for each laser, and rank the lasers in order of increasing intensity. Assume that the laser beams have uniform intensity distributions over their cross sections.

The magnetic field strength of an electromagnetic wave is measured to be 3.33*10^-6T   Question 9 options:   E = 9.99*102NC   E = 1.11*102NC   E = 9.99*10-2NC   E = 1.11*10-2NC   None of the other responses are correct.

4. As noted in the preceding example, the Sun delivers about 1 000 W/m² of energy to the Earth's surface via electromagnetic radiation. (a) Calculate the total power that is incident on a roof of dimensions 8.00 m ×20.0 m. (b) Determine the radiation pressure and the radiation force exerted on the roof, assuming that the roof covering is a perfect absorber.