Textbook Notes (280,000)
CA (170,000)
Ryerson (10,000)
PCS (40)
Chapter 12

# PCS 227 Chapter Notes - Chapter 12: Thermal Expansion, International System Of Units, Heat Capacity

Department
Physics
Course Code
PCS 227
Professor
Karshafian
Chapter
12

This preview shows half of the first page. to view the full 2 pages of the document.
Chapter 12 | Temperature and Heat | Notes
Temperature:
Temperature in Kelvin (K):
๎ถ๎ฏ๎ต ๎ถ๎ฎผ๎ต๎ด๎น๎ต๎ค๎ณ๎ท ๎
Thermal Expansion (Linear Thermal Expansion of a Solid):
Example: The Stress on a Steel Beam
The beam is mounted between two concrete supports when the temperature is 23๎จ. What
compressional stress must the concrete supports apply to each end of the beam, if they are to
keep the beam from expanding when the temperature rises to 42๎จ. Steelโs Yongโs Modulus: 2.0
x 1011 N/m2. Steelโs Coefficient of Thermal Expansion: 12.0 x 10-6 ๎ฌต
๎จ.
๎ฟ๎ฎ
๎ฎ๎ฌด
๎ต ๎ ๎ฎ ๎ฟ๎ถ๎ก ๎ฟ๎ฎ
๎ฎ๎ฌด
๎ต ๎ต๎๎๎ฝ๎๎๎ก ๎ต๎๎๎๎๎ ๎ต ๎ฏ๎ ๎ฎ ๎ต๎๎๎ฝ๎๎๎
๎ต๎๎๎๎๎ ๎ต ๎ฏ๎ ๎ฎ ๎ฟ๎ฎ
๎ฎ๎ฌด
๎ต ๎ด๎ค๎ฒ๎๎ต๎๎ณ๎ฒ๎ฌต๎ฌต ๎ฐ ๎๎ฌถ
๎ค๎ฎ๎ณ๎ด๎ค๎ฒ๎๎ต๎๎ณ๎ฒ๎ฌฟ๎ฌบ ๎ณ
๎จ๎ฎ๏บ๎ถ๎ด๎จ ๎ต๎ด๎ต๎จ๏ป
๎ต๎๎๎๎๎ ๎ต ๎น๎ค๎ธ๎๎ต๎๎ณ๎ฒ๎ฌบ๎๏พ๎ฐ ๎๎ฌถ๏ฟ
๎ค
Volume Thermal Expansion:
๎ฟ๎ธ ๎ต ๎ ๎ฎ ๎ธ
๎ฌด๎ฎ ๎ฟ๎ถ
Heat:
Heat is the energy that flows from a higher temperature object to a lower โ temperature object
because of a difference in temperatures. SI Unit of Heat is Joules (J).
The heat flows from hot to a cold originates in the internal energy of the hot substance.
The heat that must be supplied or removed to change the temperature of a substance is:
๎ณ ๎ต ๎ ๎ฎ ๎ฟ ๎ฎ ๎ฟ๎ถ
Where Q is the heat, m is the mass, c is the specific heat capacity and ๎ฟ๎ถ is the change in
temperature.
๎ถ๎ฌด๎ ๎ฎ๎ฌด
๎ถ๎ฌด๎ต ๎ฟ๎ถ ๎ ๎ฎ๎ฌด๎ต ๎ฟ๎ฎ
๎ฟ๎ฎ
๎ฎ๎ฌด
๎ ๎ฟ๎ถ
๎ฟ๎ฎ
๎ฎ๎ฌด
๎ต ๎ ๎ฎ ๎ฟ๎ถ
๎น๎๎๎๎๎๎๎๎๎๎๎๎๎๎
๎ฟ๎๎๎๎๎๎ฟ๎๎๎๎๎๎๎๎๎๎ฎ๎๎๎๎ฝ๎
๎๎ง๎๎๎ฝ๎๎๎๎๎๎
find more resources at oneclass.com
find more resources at oneclass.com