calculate the time (in years) it would take to send a message to the Galactic Capitol located at the center of our Milky Way galaxy and then

Question

calculate the time (in years) it would take to send a message to the Galactic Capitol located at the center of our Milky Way galaxy and then receive the reply. We live about 2.5×10^20 meters away from the Galaxy center. Assume the message leaves the Earth and travels at the speed of light and that they take 1 year to decide what to answer..

in progress 0
Đan Thu 7 months 2021-07-20T22:03:32+00:00 1 Answers 2 views 0

Answers ( )

  1. sori
    0
    2021-07-20T22:05:03+00:00
    Reply

    Answer:

    The total time is \bf{52850~Yr}.

    Explanation:

    Given:

    The distance between Galactic Capitol and Earth is, d = 2.5 \times 10^{20}~m

    The speed of light is, c = 3 \times 10^{8}~m/s

    The time taken by the message to reach and come back to Earth is given by

    t &=& \dfrac{2d}{c}\\~~&=& \dfrac{2(2.5 \times 10^{20}~m)}{3 \times 10^{8}~m/s}\\~~&=& 1.6 \times 10^{12}~s\\~~&=& \dfrac{1.6 \times 10^{12}~s}{(86400 \times 365)~s}~Yr\\~~&\approx& 52849~Yr

    In addition they take 1 year to decide to reply.

    Thus, the total time is 25850~Yr.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )