Answer:
E y = 3 Ez
Step-by-step explanation:
Frequency of Y is three times the frequency of Z.
![f_(y) = 3 f_(z)](https://img.qammunity.org/2020/formulas/physics/high-school/9517y3on6yrtpje853cfopa3baq63igg9n.png)
The energy is directly proportional to the frequency.
The relation between energy and frequency is given by
E = h f
where, h is the Plank's constant and f be the frequency.
.... (1)
And
.... (2)
Dividing equation (1) by equation (2), we get
![(E_(y))/(E_(z)) = (f_(y))/(f_(z))](https://img.qammunity.org/2020/formulas/physics/high-school/18mafg76w7314otqyi9ft49r8gs6ct4clx.png)
![(E_(y))/(E_(z)) = (3 f_(z))/(f_(z))](https://img.qammunity.org/2020/formulas/physics/high-school/ufqwg75t263smblutqd62vd5z03jpyl53m.png)
So, energy of wave Y is three times the energy of Z.