An oceanic depth-sounding ship surveys the ocean bottom near the Mariana Trench, the deepest known location under the ocean. They use ultrasonic sound that travels at 1430 m/s in sea water. They find a 15.4 s delay of the echo to the ocean floor and back. What is the depth?

A Girl Scout is taking a 12.00-km hike to earn a merit badge. While on the hike, she sees a cliff some distance away. She wishes to estimate the time required to walk to the cliff. She knows that the speed of sound is approximately 343 meters per second. She yells and finds that the echo returns after approximately 2.2 seconds. If she can hike 1.00 km in 7.3 minutes, how long would it take her to reach the cliff? At minutes

A bat at rest sends out ultrasonic sound waves at 54.0 kHz and receives them returned from an object moving directly away from it at 33.0 m/s . What is the received sound frequency?

There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers (named 'Tango' and 'Foxtrot') have landed. The engineers know that landing site A is much hotter than landing site B. Unfortunately, the only working sensors on Tango and Foxtrot measure the speed of sound. If Tango measures the speed of sound at its landing site as 240 m/s, while Foxtrot measures speed of sound as 258 m/s at its landing site, where has each rover landed? Tango landed at site A while Foxtrot landed at site B. Tango landed at site B while Foxtrot landed at site A. Both Tango and Foxtrot landed at site A. O Both Tango and Foxtrot landed at site B.

In echolocation, a RADAR used infrared to determine the distance of a far away object. Estimate this range if the sender has received the reflected signal after 5.0 µs. 1.5 km 15 km 60 km 6.0 km

Express the following in W/m² : 80 dB

AM radio signals are broadcast at frequencies between 550 kHz (kilohertz) and 1600 kHz and travel at 3 x 10^8 m/s. a) What is the range of wavelengths for those signals? b) FM frequencies range between 88 MHz (megahertz) and 108 MHz and travel at the the same speed. What is the range of the FM frequencies.

A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?

A group of hikers hears an echo 3.10 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 344 m/s.)                         m

A group of hikers hears an echo 1.00 s after shouting. How far away is the mountain that reflected the sound wave? (Assume the speed of sound is 342 m/s.) m