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podryga [215]
3 years ago
9

A) Find the wavelength of an electromagnetic wave with frequency 9.35 GHz = 9.35 109 Hz (G = giga = 109), which is in the microw

ave range. λ = m
(b) Find the speed of a sound wave in an unknown fluid medium if a frequency of 532 Hz has a wavelength of 2.00 m.
Physics
1 answer:
miss Akunina [59]3 years ago
4 0

Answer:

(a) \lambda=0.032\ m

(b) v = 1064 m/s                                                                

Explanation:

(a) Frequency of electromagnetic wave, f=9.35\ GHz=9.35\times 10^9\ Hz

Let \lambda is the wavelength of electromagnetic wave. It can be calculated as :

c=f\lambda

\lambda=\dfrac{c}{f}

\lambda=\dfrac{3\times 10^8\ m/s}{9.35\times 10^9\ Hz}

\lambda=0.032\ m

(b) Frequency of medium, f = 532 Hz

Wavelength, \lambda=2\ m

Let v is the speed of sound wave in an unknown fluid. Using the relation as :

v=f\lambda

v=532\times 2

v = 1064 m/s

Hence, this is the required solution.

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Light with a frequency of 7.30 x 1014 hz lies in the violet region of the visible spectrum. What is the wavelength of this frequ
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From the theory we know that:

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We were told that:

f = 7.30 . 10^{14}

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