A Star That Is 100 Pc Distant from Earth Has

question 155

Multiple Choice

A star that is 100 pc distant from Earth has an apparent magnitude of m +2.5.According to the equation in Discovery 10-2 in Comins,Discovering the Essential Universe,6th ed.,what is its absolute magnitude?

• A) -7.5
• B) +7.5
• C) -2.5
• D) -47.5

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Definitions:

Secretin

A hormone secreted by the small intestine, which stimulates the secretion of pancreatic juice and bile.

Intrinsic Factor

A protein produced by cells in the stomach lining that is essential for the absorption of vitamin B12 in the small intestine.

Pepsinogen

is the inactive form of pepsin, an enzyme in the stomach that breaks down proteins in food.

Stomach

A digestive organ in the gastrointestinal tract that plays a key role in digestion by secreting stomach acids and enzymes.