Sunday
March 26, 2017

Post a New Question

Posted by on .

My cell phone has an antenna about 10.00cm long. If this is one quarter of the wavelength of the radiation, at what frequency in Megahertz does it operate? Note that cell phones, like radio, transmit sounds via electromagnetic waves which travel at the speed of light or 3x108m/s

  • science - ,

    V = 3*10^8m/s = 300 m/uS.
    L = V / F = 4*10cm = 40cm = 0.4 m. =
    Wavelength.
    300 / F = 0.4.
    0.4F = 300.
    F = 300 / 0.4 = 750 Mhz.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question