The process that transfers energy when particles collide in a solid is heat transfer by conduction.

Here's why:

* Conduction is the transfer of heat energy through direct contact between particles.

* In a solid, the particles are tightly packed together, allowing for efficient energy transfer through collisions.

* When a particle with higher kinetic energy (more vibration) collides with a particle with lower kinetic energy, it transfers some of its energy to the other particle.

* This process continues throughout the solid, resulting in the overall transfer of heat energy.

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