What is the energy of a 2.09hz wave?

This can be solve using the Planck-Einstein Equation

Also known as Planck's Relation, the energy of a photon is given by:

E=hf

 , where:

E = Energy (J)

h = Planck's Constant (J*s)= 6.626070040(81)×10−34 Js

f = Frequency (Hz)= 2.09 Hz

E=1.3848*10-33 J

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.