Question: An elephant stomps the ground creating sound waves in the air and vibrations (waves) in the ground. Sound waves travel through the air at approximately

An elephant stomps the ground creating sound waves in the air and vibrations (waves) in the ground. Sound waves travel through the air at approximately 0.3 km/s, and a vibration of the Earth's crust travels at approximately 6.1 km/s.
a. Write parametric equations that model both waves for 3 s, and graph them on your calculator in an appropriate window.
b. How far does the wave in the ground travel in 3 s? How long does it take the sound wave in the air to travel that same distance?
c. A researcher's equipment detects the sound wave in the air 10 s after detecting the sound vibration in the ground. How far is the elephant from the researcher?

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a Possible answer air x 03t y 1 ground x 61t y 2 0 20 5 0 3 1 0 t 3 b 183 km 61 s Trace your ... View full answer

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