Answer:
Economic activity is the activity of making, providing, purchasing, or selling goods or services.
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Answer:
a)
Explanation:
Newton's First law (aka law of inertia) says that any object, not subject to an external influence, must be keep in its present motion status (at rest or moving at constant speed along a straight line) forever.
So, if we see an object in motion slowing down, there must be an external infuence acting on it, that makes it slow down, like a friction force, for instance.
Answer:
Explanation:
From the question we are told that:
Frequency 
Sound intensity drop 
Time 
Therefore
Sound intensity Ratio
Generally the equation for Sound intensity is mathematically given by
Generally the equation for Quality Factor is mathematically given by
