Total distance travelled = D = 2 d = 2 x 90 =180 m
V = speed of sound in water = 1530 m/s
t = time for echo = distance / Speed = D/V = 180 / 1530 = 0.12 sec
B)
wavelength = Speed / frequency = 1530 / 55000 = 0.0278 m = 27.8 mm
Dolphins of the open ocean are classified as Type II Odontocetes (toothed whales). These animals use...
Dolphins of the open ocean are classified as Type II Odontocetes (toothed whales). These animals use ultrasonic "clicks" with a frequency of about 55 kHz to navigate and find prey. Suppose a dolphin sends out a series of clicks that are reflected back from the bottom of the ocean 75m below. What is the wavelength associated with this? a)27.8 b)0.028 c)0.036 d)37.5 e)None of the above