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April 20, 2014

Homework Help: physics

Posted by emily on Friday, November 9, 2007 at 3:52pm.

A certain radar installation used to track airplanes transmits electromagnetic radiation of wavelength 7 cm.

(a) What is the frequency of this radiation, measured in billions of hertz (GHz)? __________GHz

(b) What is the time required for a pulse of radar waves to reach an airplane 3 km away and return? ________s

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