Question

# a. A guitar string is vibrating with a wave having a wavelength of 1.6 m. This...

a. A guitar string is vibrating with a wave having a wavelength of 1.6 m. This string has a linear mass density of 20 g/m. If the tension holding the string is 7500 N, what is the frequency pitch of the sound produced? Answer in 2 decimal places, and units assumed in Hz.

b. Echolocation is a technique used by some animals such as bats, whales and dolphins to assess their surroundings without using vision. A whale gets too far from its group and uses this technique to locate them. It sends out a loud, echoing howl. When this sound wave travels, it is reflected back to the whale when it encounters an obstruction. Assume the whale can determine the wave reflected from its whale companions and knew they were 1.31 km away. How long did the wave take before the whale hears the reflected echo? Assume sound travels around 1480 m/s in water. Answer with ONLY the value in 2 decimal places, assumed in seconds.

Comment

Both of the parts has been answered.

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