Answer:
a) the three longest wavelengths = 4.8m, 2.4m, 1.6m
b) what is the frequency of the third-longest wavelength = 75Hz
Explanation:
The steps and appropriate formula and substitution is as shown in the attached file.
KE = ½ mv²
KE = ½ (150 kg) (3 m/s)²
KE = 675 J
Kinetic energy
Plate Tectonic Theory