Please Help answer all part of this problem. Thank you . (7%) Problem 6: You pla
ID: 1589886 • Letter: P
Question
Please Help answer all part of this problem.
Thank you .
(7%) Problem 6: You place your ear onto a steel railroad track and hear the sound of a distant train through the rails At J 3.1 seconds faster than you do through the air. The speed of sound in steel is v 6100 m/s while in air the speed of sound is va 343 m/s Randomized Variables 4t 3.1 seconds. G A 25% Part (a) Write an equation for the time it takes the sound to reach you through the air if the distance to the train is represented by D Grade Summary 0% Deductions Potential 100% Submissions Attempts remaining: 5 4 5 6 60% per attempt detailed view Submit give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. A 25% Part b) Write an equation for the time it takes the sound to reach you through the steel if the distance to the train is represented by A 25% Part (c) Use the difference in these two times to write an equation for the distance to the train A 25% Part (d) For the given information find the distance to the train in meters.Explanation / Answer
A) time taken ta = distance travelled / velocity
ta = D/Va
B) time taken through steel is ts = distance travelled /velocity = D/Vs
C) ts-ta = D*[(1/vs)-(1/va)]
distance D = (ts-ta)/[(1/vs)-(1/va)] = deltat/[(1/vs)-(1/va)]
D) Distance D = 3.1/((1/6100)-(1/343)) = 1126.65 m