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30 May, 07:55

Suppose the Opera station broadcasts at 90.5MHz and the Rock and Roll station broadcasts at 107.1MHz. 1. Which station's signal has waves with longer waveslength? 2. Which station's signal has waves with higher energy?

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  1. 30 May, 08:07
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    1). The "Opera" at 90.5 MHz has lower frequency,

    so its wavelength is longer.

    2). Whichever station is transmitting with higher power

    has waves with higher energy.

    Each photon of the transmission at 107.1 MHz carries more energy,

    because the energy of a photon is proportional to its frequency.

    But it's a mistake to think that the station at higher frequency has

    waves with higher energy.
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