https://courseworkassignment.com/wp-content/uploads/2021/07/LOGO-300x75.png00Dennishttps://courseworkassignment.com/wp-content/uploads/2021/07/LOGO-300x75.pngDennis2021-08-06 02:46:172021-08-06 02:46:17how much time is required for a sound pulse to travel 2.56 m and back in air at 20 degrees...