A Radiometer Has Two Square Vanes (Each Measuring 1

question 43

Multiple Choice

A radiometer has two square vanes (each measuring 1.0 cm by 1.0 cm) ,attached to a light horizontal cross arm,and pivoted about a vertical axis through the center,as shown in the figure.The center of each vane is 6.0 cm from the axis.One vane is silvered and it reflects all radiant energy incident upon it.The other vane is blackened and it absorbs all incident radiant energy.An electromagnetic wave with an intensity of 0.30 kW/m² is incident normally upon the vanes.What is the electromagnetic power absorbed by the blackened vane? , μ₀ = 4π × 10^-7 T • m/A,ε₀ = 8.85 × 10^-12 C²/N • m²)

• A) 0.030 W
• B) 0.040 W
• C) 0.050 W
• D) 0.060 W
• E) 0.090 W

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Definitions:

Theory of Planned Behaviour

A psychological theory that links beliefs and behavior, suggesting that an individual's behavior is determined by their intention to perform the behavior, which is, in turn, influenced by their attitudes, subjective norms, and perceived behavioral control.

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A listing of products or services rendered that is used when billing for that product or service.