A Planar Electromagnetic Wave Is Propagating in the +X Direction

question 478

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,ε₀ = 8.85 × 10^-12 C²/N • m²)

• 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:

Bullwhip Measure

Refers to the calculation of the variation in demand and inventory levels within a supply chain, illustrating how slight changes in consumer demand can lead to larger variances in orders placed upstream.

Dampening Scenario

A situation where fluctuations in demand or supply are reduced or stabilized to minimize the impact on operations or planning.

Bullwhip Measure

A metric that quantifies the increase in variability or fluctuations in order and inventory levels observed as one moves up the supply chain from retailers towards manufacturers.

Supply Chain

The network of manufacturers, suppliers, and logistics providers involved in producing and delivering a product to the end user.