Question 2 The Poynting vector on the front surface of a small cube is equal to S = 7 mW/cm? as shown in the figure below. Its direction and magnitude on two other surfaces are also indicated. The vector S = 0 on the remaining three surfaces of the cube. Assuming that the volume of the cube is 8 cm3, find (a) V.S and (b) interpret its physical meaning based on the result. 1 mW/cm? 3 mW/cm? 7 mW/cm? y
Question 2 The Poynting vector on the front surface of a small cube is equal to S = 7 mW/cm? as shown in the figure below. Its direction and magnitude on two other surfaces are also indicated. The vector S = 0 on the remaining three surfaces of the cube. Assuming that the volume of the cube is 8 cm3, find (a) V.S and (b) interpret its physical meaning based on the result. 1 mW/cm? 3 mW/cm? 7 mW/cm? y
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Transcribed Image Text:Question 2
The Poynting vector on the front surface of a small cube is equal to S = 7 mW/cm? as shown in the figure
below. Its direction and magnitude on two other surfaces are also indicated. The vector S = 0 on the
remaining three surfaces of the cube. Assuming that the volume of the cube is 8 cm³, find (a) V.S and (b)
interpret its physical meaning based on the result.
1 mW/cm?
3 mW/cm?
7 mW/cm?
y
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