3.1 Particle nature of matter

IB Physics: 3.1 Particle nature of matter

In mechanics we accounted for the loss of energy when a block is pulled along a rough surface by assuming that the block is made of particles called atoms. Once this assumption was made it was easy to explain where the energy was going; it was increasing the kinetic and potential energies of the atoms by causing them to move faster and change their position.We also explained how a fuel such as petrol can contain energy...

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