The Diagram Shows Four Situations in Which a Source of Sound

question 13

Multiple Choice

The diagram shows four situations in which a source of sound S and a detector D are either moving or stationary.The arrows indicate the directions of motion.The speeds (when not zero) are all the same.(Note that the detector in situation 3 is stationary) .Rank the situations according to the apparent frequency of the source, lowest to highest.

• A)1, 2, 3, 4
• B)4, 3, 2, 1
• C)1, 3, 4, 2
• D)2, 1, 4, 3
• E)None of the above

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Definitions:

Arthritis Flare-Up

A sudden and temporary increase in symptoms of arthritis, including joint pain, swelling, and stiffness.

Range Of Motion

The full movement potential of a joint, usually its range of flexion and extension.

Nutritional Deficiency

A lack of essential nutrients in the diet, leading to various health problems.

Nutritional Needs

The essential vitamins, minerals, and other nutrients required by the body for healthy functioning.