Your potential energy and mass don't tell what your weight is.
If I walk up from the first floor to the second floor, my weight hasn't
changed even though my potential energy has increased.
A.900 watts That would be your correct answer
Answer:
I think it would be exchanging sorry if it's wrong
Answer:
Explanation:
Given
Distance between source and receiver 
Sound Intensity 
Distance of of second observer 
Intensity varies as

using this





Your answer is B
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