In Order for Two Clumps of Dust to Stick Together

question 2

Multiple Choice

In order for two clumps of dust to stick together in an accretion disk, they must collide at roughly

• A) 100 m/s.
• B) 10 m/s.
• C) 1 m/s.
• D) 0.5 m/s.
• E) 0.1 m/s or less.

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Definitions:

Coefficient of Correlation

A numerical indicator that determines the intensity and orientation of a linear connection between two factors.

Linear Relationship

A relationship between two variables where a change in one variable is associated with a proportional change in the other variable.

Correlation Coefficient

A statistical metric that determines the strength of the connection between the relative changes of two variables.

Correlation Coefficient

A statistical indicator that measures the intensity of the link between the relative fluctuations of two variables.