A. silver and gold. Both silver and gold are elements. b is not correct because CO2 is a compound, not a mixture, and c is incorrect because salt and pepper are not elements.
Answer:
A
Explanation:



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For both cases we will use the proportional values of the distance referring to the amplitude and intensity. Theoretically we know that the intensity is inversely proportional to the square of the distance, while the amplitude is inversely proportional to the distance, therefore,
PART A ) Intensity is inversely proportional to the square of the distance

Therefore the intensity of the two values would be


PART B) Amplitude is inversely proportional to the distance



The answer is B- 384,400
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Answer:
One way to increase acceleration is by changing the velocity.