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The frequency of the electromagnetic waves in a microwave oven is 2.2 GHz.

A large piece of cake is placed inside this microwave oven without the rotating plate, and left to cook for a while.

Once the cake is cut, the distance between adjacent uncooked points is closest to ...

  • physics -

    1/2 of the microwave wavelength. That is the distance between nodes of the standing wave pattern.

    For the wavelength, use the equation
    wavelength = c/frequency

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