Question

if the distance to earth at the time was 9x10^7 km and radio waves travel with a speed of 3x10^8 m/s, how long did it take for the signal to reach listeners on Earth?

Answer 1

Answer on Question #46308, Physics, Astronomy — Astrophysics

if the distance to earth at the time was 9x10^{7} km and radio waves travel with a speed of 3x10^{8} m/s, how long did it take for the signal to reach listeners on Earth?

Solution

It took him

$t=\frac{s}{v}=\frac{9\cdot 10^{10}m}{3\cdot 10^{8}m/s}=3\cdot 10^{2}\,s=5min$

http://www.AssignmentExpert.com/