# physics

Microwave ovens typically cook food using microwaves the a frequency of about 3.00 GHz (gigahertz 10 to the nine Hz). Show the wavelength of these microwaves traveling at the speed of light is 10cm.

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1. Wavelength = Speed/frequency
Speed of light: 3*10^8 m/s
Frequency = 3*10^9 Hz
Wavelength = 3*10^8/(3*10^9) = 0.1 m = 10cm

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