Which barrier initially opposes hydrogen fusion within protostars?

💡 Explanation

Electrostatic repulsion creates the Coulomb barrier, because fusion requires nuclei to overcome this force to get close enough for the strong nuclear force to dominate. Therefore, fusion is initially hindered, rather than aided by gravitational pressures or radiation properties at this stage.

• Which risk increases when the Arrhenius equation predicts exceedingly high reaction rates at extremely elevated temperatures within a chemical reactor?
• Which outcome occurs when gravitational and inertial mass equivalence breaks down?
• Which outcome results when thermal energy weakens intermolecular forces within a polymer?
• Which outcome occurs when interstitial alloying disrupts regular spacing in a metal lattice?
• Which outcome follows increased signal attenuation alongside fiber optic bends?
• Which mechanism limits the conductivity of a doped semiconductor at low temperatures?