Question
how long,in seconds, does it take for a signal from the spacecraft
Home Student: chlarsonk@cwu.edu My Account Log Out | Help HW 1 Begin Date: 6/14/2017 12:01:00 AM-Due Date: 6/27/2017 11:59:00 PM End Date: 8/16/2017 11:59:00 PM (14%) Problem 4: while passing between Earth and the Moon, a spacecraft is momentarily located on the line connecting the centers of the two bodies and is at a distance of d 142 km from a radio antenna on the surface of Earth. The distance from the antenna to the moon is denoted by dm Refer to the figure Moon Assignment Status Click here for detailed view Otheexpertta.com Problem Status Completed 33% Part (a) Recall that the speed of light is 3.0 108 m/s. How long, in seconds, does it take for a signal fromthe 2 Completed 3 4 Partial 5 6 spacecraft to arrive at the antenna on Earth? Grade Summary Deductions 95% Completed Deductions- 5% Potential 71819 4 5 6 Submissions Attempts remaining9 (5% per attempt) sin() | cos() | tan(__ ( cotan asin acos0 atan0 acotan0 sinh0 cosh0 tanh0 cotanho detailed view 1 23 Degrees Radians VO Submit Hint Feedback Igive up!
Explanation / Answer
Given : Distance = 142 km = 142000 m
Speed of light = 3×10^8
Therefore,t 1 = 142000/(3×10^8) s = 0.000473 s
