A certain radar installation used to track airplanes transmits electromagnetic radiation of wavelength 3cm. What is the frequency of this radiation, measured in billions of hertz.
Thanks
Frequency of Radiation
2014-07-24 7:33 pm
回答 (1)
2014-07-24 9:10 pm
✔ 最佳答案
Take the speed of electromagentic wave be 3 x 10^8 m/sHence, frequency of radiation = 3x10^8/(3/100) Hz = 10^10 Hz = 10 billion Hz
2014-07-24 17:41:27 補充：
Note that in physics, the term "billion Heratz" is rarely used. Instead, we usually use the term Giga-Hertz, abbreviated GHz, to represent 1 "billion hertz".
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