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Which mechanism inhibits fusion initiation inside a collapsing nebula?

A)Coulomb barrier overcoming increases
B)Gravitational potential energy decreases
C)Kinetic energy loss dominates
D)Nuclear binding energy stagnates

💡 Explanation

The Coulomb barrier inhibits fusion because electrostatic repulsion resists overcoming short-range nuclear forces. Therefore, fusion won't begin unless temperatures rise for increased kinetic energy; rather than increased gravitational potential allowing collapse at suboptimal thermal conditions.

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