Lect02

# Lect02 - Physics II Heat& Electromagnetism today •...

This preview shows pages 1–3. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Physics II: Heat & Electromagnetism today: • Thermal expansion of solids and liquids • Heat capacity • Phase changes Physics 213 August 29, 2006 2.1 Thermal expansion of solids and liquids A. A steel plate has a circular hole in the middle. If the plate is heated, the hole will 1. get smaller. 2. get larger. 3. stay the same size. Physics 213 August 29, 2006 2.2 Why do solids and liquids expand as they become hotter? Larger T 㱻 greater kinetic energy (K) + harder to push together than pull apart Physics 213 August 29, 2006 2.3 Atoms V(d) d What is the change in length ! L of two points a distance L apart on an object which goes from a temperature T to T + ! T ? What is the change in volume of an object? Physics 213 August 29, 2006 2.4 Heat capacity (c) How much heat (energy) Q does it take to raise the temperature of a substance by ! T ? Water : 4190 J/kg•K Ice : 2100 J/kg•K Cu : 390 J/kg•K Physics 213 August 29, 2006 2.5 B. If you add heat to an otherwise insulated container partially Flled with water at...
View Full Document

## This note was uploaded on 05/25/2008 for the course PHYS 2213 taught by Professor Perelstein,m during the Spring '07 term at Cornell.

### Page1 / 3

Lect02 - Physics II Heat& Electromagnetism today •...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online