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KiRa [710]
3 years ago
8

A certain FM radio station broadcasts electromagnetic waves at a frequency of 60,500,000 Hz. These waves travel at a velocity of

300,000,000 m/s. What is the wavelength of these radio waves?
A. 4.96 m

B.0.2 m

C. 360,500,000 m

Physics
1 answer:
dusya [7]3 years ago
3 0

Answer:

Wavelength of radio wave = 4.96 meter (Approx.)

Explanation:

Given:

Frequency of radio wave = 60,500,000 Hz

Velocity of radio waves = 300,000,000 m/s

Find:

Wavelength of radio wave

Computation:

Wavelength = Velocity / frequency

Wavelength of radio wave = Velocity of radio waves / Frequency of radio wave

Wavelength of radio wave = 300,000,000 / 60,500,000

Wavelength of radio wave = 4.9586

Wavelength of radio wave = 4.96 meter (Approx.)

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MA_775_DIABLO [31]

<em>There are some placeholders in the expression, but they can be safely assumed</em>

Answer:

(a) f=1617.9\ Hz

(b) T=0.618\ ms

(c) A=20 \ Volts

(d) \varphi=60^o

Explanation:

<u>Sinusoidal Waves </u>

An oscillating wave can be expressed as a sinusoidal function as follows

V(t)&=A\cdot \sin(2\pi ft+\varphi )

Where

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The voltage of the question is the sinusoid expression  

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(a) By comparing with the general formula we have

f=5\pi\times 103=1617.9\ Hz

\boxed{f=1617.9\ Hz}

(b) The period is the reciprocal of the frequency:

\displaystyle T=\frac{1}{f}

\displaystyle T=\frac{1}{1617.9\ Hz}=0.000618\ sec

Converting to milliseconds

\boxed{T=0.618\ ms}

(c) The amplitude is

\boxed{A=20 \ Volts}

(d) Phase angle:

\boxed{\varphi=60^o}

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