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13 August, 09:38

How long does a radar signal take to travel from earth to venus and back when venus is brightest?

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  1. 13 August, 11:06
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    Given data:

    Velocity of radar signal, v = Velocity of light = 3 x 10^8 m/s

    Greatest distance between Venus and Earth d1 = 0.47 AU = 0.47 AU (a. 5 x 10^11 m / 1 AU) = 7.1x10^10 m

    Closest distance between Venus and Earth, d2 = 0.28 AU = 0.28 AU (1.5 x 10^11 m / 1 AU) = 4.2 x 10^10 m

    The time take by radar signal to travel from Earth to Venus and back when Venus is brightest is calculated as

    T1 = 2d1/v = 2 (7. a x 10^10 m / 3 x10^8 m/s) = 473 s

    The time taken by radar signal to travel from Earth to Venus and back when Venus is closest is calculated as

    T2 = 2d1/v = 2 (4.2 x 10^10 m) / 3 x 10^8 m/s = 280 s
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