Question
A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm.
a)Find the frequency of this radiation.
b)Find the time required for a pulse of radar waves to reach an airplane 4.8 km away and return.
a)Find the frequency of this radiation.
b)Find the time required for a pulse of radar waves to reach an airplane 4.8 km away and return.
Answers
Elena
λ= c/f =>
f = c/ λ =3•10^8/4•10^-2 =7.5•10^-9 Hz,
t =2•s/c =2•4800/3•10^8=3.2•10^-5 s.
f = c/ λ =3•10^8/4•10^-2 =7.5•10^-9 Hz,
t =2•s/c =2•4800/3•10^8=3.2•10^-5 s.