Which of the Following Processes Slowed the Collapse of Protogalactic

question 43

Multiple Choice

Which of the following processes slowed the collapse of protogalactic clouds?

• A)the formation of the first generation of stars
• B)the conversion of gravitational potential energy into kinetic and thermal energy as the cloud collapsed
• C)the shock waves from the exploding supernovae of the earliest stars
• D)the pull of gravity of the mass of the cloud material
• E)the radiating away of thermal energy

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