physics

posted by sarah

The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does this wave carry through the window during a 35-s phone call?

  1. drwls

    Are you related to "jay"?
    Refer to my later answer to the same question, at:
    http://www.jiskha.com/display.cgi?id=1332827138

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Physics

    An industrial laser is used to burn a hole through a piece of metal. The average density of the light is S = 1.22 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser?
  2. Physics

    1)An electromagnetic wave is produced by: an accelerating charged particle or changing magnetic fields. 2)Find the period of an electromagnetic wave of wavelength 2.20 x 10^-2 m. 3.00 x 10^8 * 2.20 x 10^-2 = 6.60 x 10^6 s
  3. physics

    In a given electromagnetic plane wave the maximumelectric field strength is 400 V/m. What is the maximum magnetic field strength?
  4. physics

    An electromagnetic wave in a vacuum has a magnetic field with a magnitude of 1.7 x 10^-6 T. What is the intensity S of the wave?
  5. physics

    The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.90 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2. How much energy does …
  6. College Physics

    A radio station with a power of 20 kW sends out an omnidirectional wave at 1.25 MHz. a. If the electromagnetic wave has an electric field of 0.22 V/m, what is the magnetic field amplitude?
  7. College Physics 2056

    An electromagnetic wave strikes a 3.00-cm2 section of wall perpendicularly. The rms value of the wave's magnetic field is determined to be 6.00 10-4 T. How long does it take for the wave to deliver 1000 J of energy to the wall?
  8. Physics

    The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.7 × 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.23 m2. How much energy does …
  9. physics

    An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is S = 1.13 109 W/m2. What is the rms value of each of the following fields in the electromagnetic wave emitted by the laser?
  10. college physics

    An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 4.84 × 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted …

More Similar Questions