We Know the White Dwarf Star Sirius B Has a Mass

question 171

Multiple Choice

We know the white dwarf star Sirius B has a mass comparable to the Sun because

• A)of its measured color.
• B)of its measured temperature compared to Sirius A.
• C)it is part of binary star system with Sirius A.

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Definitions:

Levator Labii Superioris

The Levator Labii Superioris is a facial muscle that elevates the upper lip, aiding in expressions of disgust or snarling.

Platysma

A broad, thin muscle located in the chest and neck that is involved in facial expression and movement of the jaw.

Quadriceps Femoris

A large muscle group that covers the front and sides of the thigh, responsible for extension of the knee.

Third-class Lever

A type of lever where the effort is applied between the fulcrum and the load, used in scenarios where speed and range of movement are more important than force amplification.