A Granular Substance Such as Sand Naturally Settles into a Cone-Shaped

question 16

Multiple Choice

A granular substance such as sand naturally settles into a cone-shaped pile when poured from a small aperture.Its height depends on the humidity and adhesion between granules.The angle of elevation of a pile, θ, is called the angle of repose.If the height of a pile of sand is 11 feet and its diameter is approximately 34 feet, determine the angle of repose.Round answer to nearest degree.

• A)29^o
• B)30^o
• C)31^o
• D)32^o
• E)33^o

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Definitions:

Intussusception

A medical condition wherein one part of the intestine slides into an adjacent part of the intestine, causing blockage and potential loss of blood flow.

Invagination

The process of folding one part of something into another, often used in biological contexts to describe certain cellular or anatomical formations.

Atresia

The absence or abnormal narrowing of an opening or passage in the body, such as in the digestive tract, ear canal, or heart.

Hepatitis B

A serious liver infection caused by the hepatitis B virus that can become chronic and lead to liver failure, cancer, or cirrhosis.