physics question?

A.What is the frequency of an electromagnetic wave with a wavelength of 19 cm ?

B.What would be the wavelength of a sound wave in water with the same frequency as the electromagnetic wave of part A?

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  • Anonymous
    1 month ago

    f = c/λ = 3*10^8 m/sec / 0.19 m = 1.58*10^9 Hz (1.58 GHz)

    λ' = Vs/f = 1.50*10^3 / 1.58*10^9 = 0.95*10^-6 m ( a bit less than 1 micron)

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  • Zirp
    Lv 7
    1 month ago

    A:  over 1500 MHz

    B: speed divided by frequency, I'm guessing milimeters

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  • Anonymous
    1 month ago

    frequency = speed of the wave / wavelength

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