Class l Help Chapter 16 H.W. Begin Date: 11/13/2017 12:01:00 AM -Due Date: 12/8/
ID: 1792816 • Letter: C
Question
Class l Help Chapter 16 H.W. Begin Date: 11/13/2017 12:01:00 AM -Due Date: 12/8/2017 5:00:00 PM End Date: 12/8/2017 5:01:00 PM (20%) Problem 1: You place your ear onto a steel railroad track and hear the sound of a distant train through the rails 2.6 seconds before you do through the air. The speed of sound in steel is vs-6100 m/s, and and the air temperature is 43.5° C Find the distance, D, to the train in meters. Grade Summar Potential Submissions tan0 acoso sino coso Attempts remain (1% per attempt detailed view o asin0 atan)acotan) sinh0 tanh) cotanh0 ODegrees O Radians Hint Hints: 0% deduction per hin. Hints rernain.ng: 2 Feedback: 0% deduction per feedback.Explanation / Answer
speed of sound at 43.5 C = 356.707 m/s
t = D/6100 where D is in meters and t is in seconds.
t = D/356.707;
D/356.707 - D/6100 = 2.6;
D*6100 - D*356.707 = 2.6*356.707*6100 =>
5743.293 D = 5657373.02
D = 985.04 m