A Light Source Radiates 60 $\vec { B }$ Field of This Light at a Distance of 0

question 9

Multiple Choice

A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions.What is the amplitude of the $\vec { B }$ field of this light at a distance of 0.700 m from the bulb?(ε₀ = 8.85 × 10^-12 C²/N ∙ m²,μ₀ = 4π × 10^-7 T ∙ m/A,c = 3.0 × 10⁸ m/s)

• A)1.76 × 10^-7 T
• B)2.02 × 10^-7 T
• C)2.22 × 10^-7 T
• D)2.86 × 10^-7 T

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Definitions:

Rhonchi

Deep snoring or rattling sounds during breathing; associated with asthma, acute bronchitis, or any condition involving partial obstruction of the lung’s airway.

Hyperventilation

The condition of breathing rapidly and deeply. Hyperventilating decreases the amount of carbon dioxide in the blood.

Dyspnea

A clinical term for the sensation of difficulty in breathing or shortness of breath, a common symptom of various medical conditions.

Tachypnea

A condition characterized by abnormally rapid breathing, often seen in response to various medical conditions.