A Light Source Radiates 60

question 15

Multiple Choice

A light source radiates 60.0 W of single-wavelength sinusoidal light uniformly in all directions.What is the amplitude of the electric field of this light at a distance of 0.400 m from the bulb? (ε₀ = 8.85 × 10^-12 C²/N ∙ m²,μ₀ = 4π × 10^-7 T ∙ m/A,c = 3.00 × 10⁸ m/s)

• A)162 N/C
• B)212 N/C
• C)82.1 N/C
• D)150 N/C
• E)52.9 N/C

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Definitions:

Free Association

A psychoanalytic technique in which a patient says whatever comes to mind without censorship as a way of exploring the unconscious.

Transference

An emotional reaction that occurs during psychoanalysis, in which the patient displays feelings and attitudes toward the analyst that were present in another significant relationship.

Self-Actualization

The pursuit of self-defined goals for personal fulfillment and growth.

Resistance

Opposition in psychotherapy, where the patient either consciously or unconsciously opposes discussing, recalling, or engaging with certain thoughts, feelings, or experiences.