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Matse 201 Exam 3 Questions With Verified Answers

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  • MATSE 259

Matse 201 Exam 3 Questions With Verified Answers 3R above the debye temp, the heat capacity levels off to this value higher the debye temp is higher/lower for ceramics than for metals phonon quantized mode of vibration in a crystal alpha coefficient of thermal expansion is denot...

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  • June 7, 2024
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  • 2023/2024
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  • matse 201 exam 3 questions with verified answers 3

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Matse 201 Exam 3 Questions With Verified
Answers
3R
above the debye temp, the heat capacity levels off to this value


higher
the debye temp is higher/lower for ceramics than for metals


phonon
quantized mode of vibration in a crystal


alpha
coefficient of thermal expansion is denoted by


decreases
alpha increases/decreases with increasing bond strength


stronger, closer
stronger/weaker bonds and farther/closer atomic spacing facilitates heat transfer


decrease
defects tend to increase/decrease thermal conductivity


atomic vibrations, conduction of free electrons
two thermal conduction mechanisms are


thermal expansion, thermal conductivity, fracture toughness
thermal shock is dependent on these three mechanisms


dielectrics
materials with very high resistivity(insulating)


superconductors
materials with no electrical resistance below some critical temp


the concentration and mobility of charge carriers
the resistivity of a material depends on


fermi energy
corresponds to the energy level below which all occupiable states would be filled at absolute zero
temperature


H=NI/l

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