4. Explain why the friction between two pieces of wood is reducedwhen they are smooth and polished.

Required : Why the friction is reduced when the surfaces of two wood pieces are polished.

Answered: Explain why the friction when they are…

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Physics

Explain why the friction when they are smooth an

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 7CQ: Explain how the choice of the “Stem of interest” affects which forces must be considered when...

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Concept explainers

Debye Theory of Solids

In solid-state physics, debye theory is used to estimate the phonons contributing to the specific heat capacity in a solid. It explains that the specific heat is a consequence of the vibrations of the atomic lattice of the solid, which is in contrast to the Einstein model. In the Einstein model, solids are treated as independent, non-interacting quantum harmonic oscillators. This model clearly explains the low-temperature dependence of the heat capacity, which is proportional to T3. This is known as Debye T3 law.

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