As an Interstellar Cloud of Hydrogen Gas Shrinks in Size

question 64

Multiple Choice

As an interstellar cloud of hydrogen gas shrinks in size, its rate of rotation

• A) increases, because its angular momentum is conserved.
• B) decreases, because its angular momentum is conserved.
• C) increases, because its total energy is conserved.
• D) increases, because the force of gravity strengthens as the cloud shrinks.
• E) decreases, because the force of gravity strengthens as the cloud shrinks.

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