Serway & Jewett — Wave Motion: Problem 27

You are at Quincy Quarries Reservation with your grandfather, performing the activity described in the opening storyline. The coordinates of your position when your grandfather claps his hands are N 42.244 34°, W 71.033 78°. Your smartphone stopwatch tells you that the time interval between the clap and the echo is 0.47 s. When you walk to the cliff, your coordinates are N 42.244 06°, W 71.034 66°. What speed of sound do you report to your grandfather? (Hint: Use an online resource to calculate the distance between the coordinates.)