If the number on an FM radio dial reads 99.5 MHz, what is the wavelength of this signal?
a.
2.23 m
c.
3.02 m
b.
3.23 m
d.
2.03 m

Question

09-05-2015
Physics

Answered

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If the number on an FM radio dial reads 99.5 MHz, what is the wavelength of this signal?
a.
2.23 m
c.
3.02 m
b.
3.23 m
d.
2.03 m

Sagot :

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Girardiidn Girardiidn · Answer 1 · 2015-05-09T20:48:17-04:00

Girardiidn Girardiidn

09-05-2015

1 MHz --- 1 000 000 Hz
99.5 MHz --- x

x = 99 500 000 Hz = 99,5x10^6 Hz

v = λ . f
c = λ . f
3x10^8 = λ . 99,5x10^6
λ = 3x10^8 / 99,5x10^6
λ ≈ 0,0302x10^2
λ ≈ 3,02 m

i think is the letter (B), isn't it?

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