An 800-KHz Radio Signal Is Detected at a Point 9

question 1

Multiple Choice

An 800-kHz radio signal is detected at a point 9.1 km distant from a transmitter tower.The electric field amplitude of the signal at that point is 0.440 V/m.Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed.What is the average total power radiated by the transmitter? (c = 3.00 × 10⁸ m/s, μ₀ = 4π × 10^-7 T ∙ m/A,ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

• A)0.27 MW
• B)0.32 MW
• C)0.38 MW
• D)0.45 MW
• E)0.50 MW

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Definitions:

External Locus of Control

The belief that one's life outcomes are majorly influenced by external forces or fate rather than personal efforts.

Internal Sense

An awareness or perception of the internal state of the body, often referred to as interoception.

Determinism

The philosophical concept that all events, including moral choices, are determined completely by previously existing causes.

Psychodynamic Theory

A psychological perspective that analyzes how behavior springs from unconscious drives and conflicts.