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Question 17.1: (A) Find the speed of sound in water, which has a bulk modul...

(A) Find the speed of sound in water, which has a bulk modulus of 2.1 \times 10^{9} N / m ^{2}  at a temperature of 0°C and a density of 1.00 \times 10^{3} kg / m ^{3} .

(B) Dolphins use sound waves to locate food. Experiments have shown that a dolphin can detect a 7.5-cm target 110 m away, even in murky water. For a bit of “dinner” at that distance, how much time passes between the moment the dolphin emits a sound pulse and the moment the dolphin hears its reflection and thereby detects the distant target?

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