What Fraction of Its Mass Does a Main-Sequence Star of 25

question 325

Multiple Choice

What fraction of its mass does a main-sequence star of 25 solar masses eject into space during its lifetime?

• A) almost all of it, greater than 80%
• B) only a small fraction, about 1/100
• C) between 1/4 and 1/2
• D) only its outer atmosphere, less than 1 part in 10⁴

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Definitions:

Attachment

An emotional bond between individuals, particularly between a child and caregiver, which is critical for the child's development and psychological security.

Easy Temperament

Refers to a personality disposition noticeable from infancy, characterized by regular biological rhythms, adaptability, and a predominantly positive mood.

Authoritative Parenting

A parenting style characterized by high expectations of maturity and self-regulation, as well as high responsiveness, warmth, and support.

Secure Attachment

A healthy emotional bond formed in early childhood, characterized by trust and a sense of safety in the relationship with the caregiver.