Asked by bill
Television sets sometimes use a "rabbit-ears" antenna. A rabbit-ears antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-fifth of a wavelength of an electromagnetic wave whose frequency is 60.0 MHz. How long is each rod?
Answers
Answered by
DrBob222
speed of light = wavelength x frequency.
speed of light is 3 x 10^8 meters/second.
You have the frequency (change to Hz). Calculate wavelength and take 1/5 of that.
speed of light is 3 x 10^8 meters/second.
You have the frequency (change to Hz). Calculate wavelength and take 1/5 of that.
Answered by
bro
999308193.3
Answered by
Mathys
Electromagnetic waves travel at the speed of light
c=3×10^8m/s.
In this particular case we have that the transmitted wave has a frequency
f=60MHz=60×10^6Hz
The relationship between the frequency (f) of the electromagnetic wave and its wavelength (λ) is given by: c=fλ. Thus, solving for λ :
λ=cf=(3×10^8m/s)(60×10^6Hz)=5m
–––––
As each rod can be adjusted to be a fifth of a wavelength, then:
rod length=15λ rod length=1/5×5m=1mTherefore, the length of each rod is
1m
c=3×10^8m/s.
In this particular case we have that the transmitted wave has a frequency
f=60MHz=60×10^6Hz
The relationship between the frequency (f) of the electromagnetic wave and its wavelength (λ) is given by: c=fλ. Thus, solving for λ :
λ=cf=(3×10^8m/s)(60×10^6Hz)=5m
–––––
As each rod can be adjusted to be a fifth of a wavelength, then:
rod length=15λ rod length=1/5×5m=1mTherefore, the length of each rod is
1m
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