Objective:
At the end of this unit, the student should be able to describe the SI system and to specify the references for the three main base quantities of this system.

Objective:
At the end of this unit, the student should be able to explain the advantages of, and apply, unit analysis.

Topic 1.5: Unit conversions

Objective:
At the end of this unit, the student should be able to (a) explain conversion-factor relationships, and (b) apply then in converting units within a system or from one system of units to another.

Objective:
At the end of this unit, the student should be able to (a) determine the number of significant figures in a numerical value and (b) report the proper number of significant figures after performing simple calculations.

## Chapter 1: Measurement and Problem solving in Physics

Book work due on day of quiz-Video (The Mechanical Universe) - Video 1: Introduction

Website - The scale of the universe

## Topic 1.1: Why and how we measure

Objective:At the end of this unit, the student should be able to distinguish standard units and systems of units.

Tyson essay "The Fear of Numbers"

Tyson You-tube video: The fear of numbers

## Topic 1.2: SI units of length, mass and time

Objective:At the end of this unit, the student should be able to describe the SI system and to specify the references for the three main base quantities of this system.

Video (MIT) - Lecture 1: Measurement

## Topic 1.3: More about the metric system

Objective:At the end of this unit, the student should be able to learn to use (a) metric prefixes and (b) nonstandard metric units.

Metric system: NIST

Website - Metric Conversions.org

## Topic 1.4: Unit analysis

Objective:At the end of this unit, the student should be able to explain the advantages of, and apply, unit analysis.

## Topic 1.5: Unit conversions

Objective:At the end of this unit, the student should be able to (a) explain conversion-factor relationships, and (b) apply then in converting units within a system or from one system of units to another.

Virtual lab (PhET @ Colorado) - Density

Video (Veritasium) - Scientific notation

## Topic 1.6: Significant figures

Objective:At the end of this unit, the student should be able to (a) determine the number of significant figures in a numerical value and (b) report the proper number of significant figures after performing simple calculations.

Tutorial (Khan academy) - Significant figures

Website (RIT) - Uncertainty in numbers

MIT video lecture 1 (the first 11 min deals with measurement & uncertanity)

Lecture 1: Powers of Ten - Units - Dimensions - Measurements - Uncertainties - Dimensional Analysis - Scaling Arguments

Walter H. G. Lewin

## Topic 1.7: Problem solving in physics

## Objective:

At the end of this unit the student should be able to (a) establish a general problem-solving procedure and (b) apply it to typical problems.Video - Powers of 10

Website (FSU) - Powers of 10

Website - Fermi problems

Video - Drake equation

Video - Brian Cox calculates the energy output of the Sun

Video - Richard Feynman: Big numbers and stuff

Video (vsauce) - How big can a person get?

EstimationVideo: Mind control - Candies in a jar

Challenge problem: How many pizza shops do we need in Salisbury?