Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Trending News

Promoted
Midnight
Midnight asked in Science & MathematicsPhysics · 10 years ago

Physics: A certain radar installation used to track airplanes transmits electromagnetic radiation with a wavel?

A certain radar installation used to track airplanes transmits electromagnetic radiation with a wavelength of 2.8 cm.

What is the frequency of this radiation? Express the answer in GHz (Gigahertz).

Find the time required for a pulse of radar waves to reach an airplane 7 km away.

Not just looking for answers, more concerned with steps used. Will be quick to award BA, thanks in advance for any help.

1 Answer

Relevance
  • ♠ ♣ ♥ ♦
    Lv 7
    10 years ago
    Favorite Answer

    Take c = 3e8 m/s

    f = c / λ = 3e8m/s / 0.028m = 10.7 GHz

    t = s / v = 7000m / 3e8m/s = 2.3e-5s

    Basic formulae.

Still have questions? Get your answers by asking now.