A Planar Electromagnetic Wave Is Propagating in the +X Direction

question 11

Multiple Choice

A planar electromagnetic wave is propagating in the +x direction.At a certain point P and at a given instant,the electric field of the wave is given by = (0.082 V/m) .What is the Poynting vector at the point P at that instant? (c = 3.0 × 10⁸ m/s,μ₀ = 4π × 10^-7 T • m/A,

• A) 18 µW/m²
• B) -18 µW/m²
• C) 9.0 µW/m²
• D) -9.0 µW/m²
• E) -18 µW/m²

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Definitions:

Rationality

The quality of being based on or in accordance with reason or logic.

True Statements

Assertions or claims that accurately reflect reality or are in accordance with facts and verified information.

Rationalism

That philosophy that is characterized by its confidence in reason, and intuition in particular, to know reality independently of experience. Continental rationalism is a term usually reserved for three great European philosophers: Descartes, Spinoza, and Leibniz.

Empiricism

A philosophical stance emphasizing that knowledge comes primarily from sensory experience.