Fully Destructive Interference Between Two Sinusoidal Waves of the Same

question 36

Multiple Choice

Fully destructive interference between two sinusoidal waves of the same frequency and amplitude occurs only if they:

• A)travel in the same direction and are 270 ° out of phase
• B)travel in the same direction and are 45 ° out of phase
• C)travel in the same direction and are in phase
• D)travel in the same direction and are 180 ° out of phase
• E)travel in the same direction and are 90 ° out of phase

---

Definitions:

Periderm

A protective outer layer of tissue in plants, replacing the epidermis in parts of the stems and roots, consisting of the cork, cork cambium, and phelloderm.

Xylem

The vascular tissue in plants responsible for the conduction of water and nutrients from the roots to the leaves and other parts.

Vascular Cambium

The vascular cambium is a layer of stem cells located between the xylem and the phloem in dicots and gymnosperms, responsible for producing new layers of vascular tissue and contributing to stem growth.

Secondary Phloem

The plant tissue responsible for transporting nutrients, particularly the products of photosynthesis, from the leaves to other parts of the plant.