Question

1. SerCP8 13.P.048.ssm. My Notes Ask Your Teacher Ocean waves are traveling to the east at 3.4 m/s with a distance of 24 m between crests. (a) With what frequency do the waves hit the front of a boat when the boat is at anchor? CHz (b) With what frequency do the waves hit the front of a boat when the boat is moving westward at 1.4 m/s? Hz Need Help? Read It Talk to a Tutor Show My Work (Optional) 2. SerCP8 13.P.057. My Notes Ask Your Teacher Tension is maintained in a string as in the figure below. The observed wave speed is 21 m/s when the suspended mass is 3.0 kg. (a) What is the mass per unit length of the string? kg/m (b) What is the wave speed when the suspended mass is 2.0 kg? cm/s Need Help? Read It Talk to a Tutor

Answer 1

1 1 velocity of ocean wares - 3.49/ towards east Distance between Creests, d= 24m (wavelength) a) frequency: - 3.4 24 = 0.141 Hz b) Now if bout moves with relocity 1.40/5 towards wast. so resultant Velocity = 3.4-1.4 7 v 2 m/s towards east. frequency = freques 7 24 - 0.0833 Hz. 2) (9=10m/s) mass-3kg=m so tension in string, Ta mg 7: 3x10 T. ZON velocity of ware = 2 m/s let mass pere unit tength: So TEV? o > 30= 212M = 30 = 0.068 kg/m. 441

So mass per unit length, H = 0.068 kg/m b) Now if mass = 2kg so Tension, T= mg - 2x10 - RON M = 0.068 kg/m so V= 0.068 (294.117 17.14 m/s velocity - 17. 14 m/s. So