What physical effect does "dynamical friction" have on stars?
Increases their speed
Decreases their speed
Increases their size
Decreases their size
Answer
Dynamical friction is a process that occurs when a massive object moves through a sea of smaller objects. The smaller objects are pulled towards the larger object, and this causes the larger object to slow down. This effect is most pronounced when the smaller objects are moving in the same direction as the larger object.
Cracking the Cosmic Code: The Subrahmanyan Chandrasekhar Quiz!
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