If a 25M_⨀ Main-Sequence Star Loses Mass at a Rate

question 28

Multiple Choice

If a 25M_⨀ main-sequence star loses mass at a rate of 10⁻⁶ M_⨀/yr,then how much mass will it lose in its lifetime of 3 million years?

• A)3M_⨀
• B)5M_⨀
• C)8M_⨀
• D)10M_⨀
• E)12M_⨀

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Definitions:

Control Group

In experimental research, a group of subjects that does not receive the experimental treatment, used as a benchmark to measure how the other tested subjects perform.

Experimental Group

In experimental research, this is the group of subjects who receive the treatment or intervention being tested.

Interactive Effects

The combined impact of two or more variables when they interact with each other, often in a way that could not be predicted by considering each variable in isolation.

Independent Variables

In an experimental setting, the variable that is manipulated or changed to observe its effects on a dependent variable.