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:

Shoreline Erosion

The process by which coastal land is worn away by natural forces such as wave action, currents, or tidal movements.

Least Squares Regression

A statistical method used to fit a regression line through a set of points in such a way that minimizes the sum of the squares of the vertical distances of the points from the line.

Coefficient Of Determination

A statistical measure represented by \(R^2\) that indicates the proportion of the variance in the dependent variable that is predictable from the independent variable(s).

Coefficient Of Correlation

A statistical measure that calculates the strength and direction of the linear relationship between two variables on a scatter plot.