chapter10-web1

# chapter10-web1 - Scales –Example 1. A pan of water is...

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1 Chapter 10 Thermal Physics 1. Temperature and the zeroth Law of Thermodynamics 2. Thermometers and Temperature Scales 3. Thermal Expansion

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2 Thermal Physics s What is Thermal Physics? s What is Heat? s What is Thermal Contact? s What is Thermal Equilibrium?
3 Zeroth Law of Thermodynamics s If objects A and B are separately in thermal equilibrium with a third object, C, then A and B are in thermal equilibrium with each other. s Allows a definition of temperature

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4 Thermometers s What is a thermometer? s A Mercury thermometer s Gas thermometer
5 Temperature Scales s How does one define a temperature Scale? s The Celsius scale s The Fahrenheit scale s The Kelvin scale

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6 Kelvin Scale s Why do we need this scale? s What is first point? s What is triple point?
7 Some Kelvin Temperatures s Some representative Kelvin temperatures s Note, this scale is logarithmic s Absolute zero has never been reached

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8 Converting Among Temperature Scales ( ) 273.15 9 32 5 5 32 9 9 5 C K F C C F F C T T T T T T T T = - = + = - Δ = Δ
9 Converting Among Temperature

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Unformatted text preview: Scales –Example 1. A pan of water is heated from 25 °C to 80 °C. What is the change in temperature on the Kelvin scale and on the Fahrenheit scale? 10 Thermal Expansion s What is thermal expansion? s Linear Expansion s Area expansion s Volume expansion 11 Applications of Thermal Expansion – Bimetallic Strip s Thermostats s Use a bimetallic strip s Two metals expand differently s Since they have different coefficients of expansion 12 Thermal Expansion – Example 1. A steel railroad track has a length of 30.00 m when the temperature is 0°C. What is its length on a hot day when the temperature is 40°C? 13 Thermal Expansion – Example 1. A hole of cross-sectional area 100.00 cm 2 is cut in a piece of steel at 20°C. What is the area of the hole if the steel is heated from 20°C to 100°C? 14 Unusual Behavior of Water...
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## This note was uploaded on 01/16/2012 for the course PHYSICS 104 taught by Professor Shaukatgoderya during the Winter '12 term at Tarleton.

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chapter10-web1 - Scales –Example 1. A pan of water is...

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