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# Physics essentials for dummies

Author

Publisher

Wiley Pub., Inc

Publication Date

[2010]

Language

English

## Description

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## Table of Contents

#### From the Book - 1st ed.

Introduction

About this book

Conventions used in this book

Foolish assumptions

Icons Used in this book

Where to go from here

Chapter 1: Viewing The World Through The Lens Of Physics

Figuring out what physics is about

Paying attention to objects in motion

Getting energized

Moving as fast as you can: special relativity

Measuring your world

Keeping physical units straight

Converting between units of measurement

Nixing some zeros with scientific notation

Knowing which digits are significant

Chapter 2: Taking Vectors Step By Step

Getting a grip on vectors

Looking for direction and magnitude

Adding vectors

Subtracting vectors

Waxing numerical on vectors

Working with vector components

Using magnitudes and angles to find vector components

Using vector components to find magnitudes and angles

Chapter 3: Going the distance with speed and acceleration

From here to there: dissecting displacement

Examining axes

Measuring speed

Fast track to understanding speed and velocity

How fast am I right now? instantaneous speed

Staying steady: uniform speed

Changing your speed: nonuniform motion

Doing some calculations: average speed

Contrasting average speed and instantaneous speed

Speeding up (or slowing down): acceleration

Defining our terms

Recognizing positive and negative acceleration

Looking at average and instantaneous acceleration

Accounting for uniform and nonuniform acceleration

Bringing acceleration, time, and displacement together

Locating not-so-distant relations

Equating more speedy scenarios

Putting speed, acceleration, and displacement together

Chapter 4: Studying Circular Motions

Understanding uniform circular motion

Creating centripetal acceleration

Seeing how centripetal acceleration controls velocity

Calculating centripetal acceleration

Finding angular equivalents for linear equations

Chapter 5: Push-Ups and Pull-Ups: Exercises in Force

Reckoning with force

Objects at rest and in motion: Newton's first law

Calculating net force: Newton's second law

Gathering net forces

Just relax: dealing with tension

Balancing act: finding equilibrium

Equal and opposite reactions: Newton's third Law

Chapter 6: Falling Slowly: Gravity And Friction

Dropping the apple: Newton's law of gravitation

Down to Earth: dealing with gravity

Leaning vertically with inclined planes

Facing friction

Figuring out the normal force

Finding the coefficient of friction

Bringing static and kinetic friction into the mix

Getting moving with static friction

Staying in motion with kinetic friction

Dealing with uphill friction

Calculating the component weight

Determining the force of friction

Chapter 7: Putting Physics To Work

Wrapping your mind around work

Pushing your weight

Taking a drag

Working backward: negative work

Working up a sweat: kinetic energy

Breaking down the kinetic energy equation

Using the kinetic energy equation

Calculating kinetic energy by using net force

Saving up: potential energy

Working against gravity

Converting potential energy into kinetic energy

Pitting conservative against nonconservative forces

No work required: the conservation of mechanical energy

Powerful idea: the rate of doing work

Chapter 8: Moving Objects With Impulse And Momentum

Feeling a sudden urge to do physics: impulse

Mastering momentum

Connecting impulse and momentum

Taking impulse and momentum to the pool hall

Getting impulsive in the rain

Watching objects go bonk: the conservation of momentum

Measuring firing velocity

Examining elastic and inelastic collisions

Flying apart: elastic collisions

Sticking together: inelastic collisions

Colliding along a line

Colliding in two dimensions

Chapter 9: Navigating The Twists And Turns of Angular Kinetics

Changing gears (and equations) from linear to rotational motion

Tackling tangential motion

Calculating tangential speed

Figuring out tangential acceleration

Looking at centripetal acceleration

Applying vectors to rotation

Analyzing angular velocity

Working out angular acceleration

Doing the twist with torque

Walking through the torque equation

Mastering lever arms

Identifying the torque generated

Realizing that torque is a vector

No spin, just the unbiased truth: rotational equilibrium

Chapter 10 Taking A Spin With Rotational Dynamics

Converting Newton's second law into angular motion

Moving from tangential to angular acceleration

Bringing the moment of inertia into play

Finding moments of inertia for standard shapes

Doing rotational work and producing kinetic energy

Making the transition to rotational work

Solving for rotational kinetic energy

Going round and round with angular momentum

Chapter 11: There And Back Again: Simple Harmonic Motion

Homing in on Hooke's law

Staying within the elastic limit

Exerting a restoring force

Deja vu all over again: simple harmonic motion

Browsing the basics of simple harmonic motion

Exploring some complexities of simple harmonic motion

Breaking down the sine wave

Getting periodic

Studying the velocity

Including the acceleration

Finding angular frequencies of masses on springs

Examining energy in simple harmonic motion

Going for a swing with pendulums

Chapter 12 Ten Marvels Of Relativity

Nature doesn't play favorites

Speed of light is constant

Time contracts at high speeds

Space travel slows down aging

Length shortens at high speeds

Matter and energy are equivalent: E = mc2

Matter + antimatter equals boom

Sun Is losing mass

You can't surpass the speed of light

Newton was right

Index.

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Contributors

ISBN

9780470618417

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