Take home exam

Instructions:
1. Copy the given problem set in a one whole sheet of paper with your complete solutions. Be sure to enclose your answers in a box , and to include the units . To receive full credit, you must show all your work on this test paper.
2. This exam is due on Monday, August 17, 2011 @ 8:00 am. Please consider the time...Late submission will have a corresponding deductions.
3. The total score for papers with almost the same answers will be divided among themselves. Get rid of copying one's ideas. No sharing of ready made answers by this time...Don't forget that copying is one form of cheating which is a major offense (:

Begin here:

Physics 1

Properties of Sound

Take Home Exam

Name: __________________________________- Year & Section: __________________

1.  A deep sea ocean vessel uses SONAR to detect the ocean's bottom. Sound waves are emitted from the surface of the ocean and travel through the water at 1450 m/s. The ocean bottom is 1630 m below the surface. Determine the amount of time that passes before the sound waves are reflected back to the surface.
2. What happens when a sound wave hits a concave shaped surface? 
3. Discuss the process of the following using sound wave concept: Please select only one application
a. SONAR
b. ultrasound
c. ultrasonic flaw detector
d. ultrasonic bath

Good luck!