The Sound Level at a Point P Is 14 Db

question 25

Multiple Choice

The sound level at a point P is 14 db below the sound level at a point 1.0 m from a point source.Assuming the intensity from a point source drops off like the inverse square of the distance, the distance from the source to point P is:

• A)4.0 cm
• B)20 m
• C)2.0 m
• D)5.0 m
• E)25 m

Determine the factors that lead to changes in industry size in the long run including economic profits and losses.

Understand the significance of economic profits and normal profits in the decision-making process of firms in purely competitive markets.

Describe the relationship between market demand, economic profits/losses, and industry adjustments in the long run.

Analyze the impact of consumer demand on purely competitive industries and the resultant equilibrium.

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Definitions:

Composition

The act of combining two functions by applying one function to the result of another.

Function

A mathematical relation in which each element of a set of inputs is associated with exactly one element of a set of outputs.

Inverse Function

A function that reverses the operation of a given function, so that if the original function applied to an input gives a certain output, the inverse function applied to that output returns the original input.

Function

A relation between a set of inputs and a set of permissible outputs, where each input is related to exactly one output.