# pq18ans - amplitude of the electric field of the waves is E...

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PHYS-1200 PHYSICS II SPRING 2005 Post Quiz 18 Name___________ ANSWERS _________________ In the space provided, to the left of the question number, write the letter corresponding to the best answer to the question. _C _ 1. A source of electromagnetic waves emits waves uniformly in all directions. The intensity of the waves is I at a distance of r from the source. At a distance of 2 r from the source, the intensity of the waves will be: A. 2 I D. I – 3.0 db B. I /2 E. I – 6.0 db C. I /4 _B _ 2. A source of electromagnetic waves emits waves uniformly in all directions. The
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Unformatted text preview: amplitude of the electric field of the waves is E at a distance of r from the source. At a distance of 2 r from the source, the amplitude of the electric field of the waves will be: A. 2 E D. E – 3.0 db B. E /2 E. E – 6.0 db C. E /4 _E _ 3. A source of sound waves emits waves uniformly in all directions. The sound level of the waves is β at a distance of r from the source. At a distance of 2 r from the source, the sound level of the waves will be: A. 2 D. – 3.0 db B. /2 E. – 6.0 db C. /4...
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