Castor oil has a density of 956 kg/m3. If the speed of sound in castor oil is 1474 m/s, what is its adiabatic bulk modulus? O 2.08 x 109 N/m2 0 5 .71 x 109' N/m2 0 9.22 x 109 N/m2 0 1.77 x 109 N/m2 0 8.90 x 109 mm2 A certain string on a piano is tuned to produce middle C (f = 261.63 Hz) by carefully adjusting the tension in the string. For a fixed wavelength, what is the frequency when this tension is tripled? O 453.16 Hz O 784.89 Hz O 151.05 Hz O 370.00 Hz O 87.21 HzA source moving through water at 10.0 m/s generates water waves with a frequency of 5.0 Hz. The speed of these water waves relative to the water surface is 20.0 m/s. The source approaches an observer who is at rest in the water. What wavelength would be measured for these waves by the stationary observer? 0 8.0m O 4.0m O 6.0m O 2.0m O 1.0m