We know,
V= f× wavelength
10.5= f×0.15
f=10.5/0.15
f= 70 Hz
Answer:
A Thermal energy was converted to kinetic energy
Answer:
a)
, b) 
Explanation:
a) The absolute pressure at a depth of 27.5 meters is:



b) The force exerted by the water is:



E. Nonsense longitudinal waves have all of these properties