Examkrackers MCAT Physics: 4th Edition

Examkrackers MCAT Physics: 4th Edition

Paperback(Older Edition)

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Overview

Most MCAT prep books do little more than list and explain terms and equations selected from science textbooks that you probably already own. Memorizing the entire content of such books is unlikely to significantly improve your MCAT score because the MCAT emphasizes the understanding of concepts over the memorization of terms and equations. This book goes beyond a typical textbook in its explanation of the basic science. Drawing from his extensive MCAT experience, Jonathan Orsay offers insight into the concepts behind those terms and equations. This book will teach you how to think MCAT. Flip through the pages of this book and the books of our competitors. In their books you'll find many equations and definitions of terms. Their recipe for a prep book appears to us as: "take one textbook and just add water". In our book, you will find only the equations you'll need for the MCAT supported by copious explanation and revealing insights. You will learn things about basic science that you never knew. If you're looking for a science textbook, then we suggest you buy a real science textbook. But if you're looking for a book to improve your MCAT score, then this is the book for you. Compare our exams to the real MCAT. You'll find that our exams use the same font and font size as the real MCAT. New passages begin at the top of a column just like the real MCAT. Passages and question stems are the correct length. Diagrams and tables are in MCAT form. Now make the same comparison with the exams of our competitors. If it doesn't look like a real MCAT, it's probably not like a real MCAT.

Product Details

ISBN-13: 9781893858268
Publisher: Osote Publishing
Publication date: 02/01/2003
Series: Examkrackers
Edition description: Older Edition
Pages: 252
Product dimensions: 8.48(w) x 11.16(h) x 0.51(d)

Read an Excerpt

Compare r and l in the diagram to the left.
Any problem on the MCAT involving torque, will be a statics problem. Therefore, use the following three formulas in the order given to solve any MCAT torque problem:
Fupward = Fdownward
Frightward = Fleftward
tclockwise = tcounter-cIockwise
Let’s assume that I’m given the length of the board ‘L’, the distance from the left end of the board to the hanging string ‘x’, the mass of the object ‘m’, and my mass ‘ms’. First, I have confidence that since they asked me, I know that there is a way to answer the problem using only basic science. Second, I draw the board labeling all the force vectors that act directly on it and no others. Third, I choose my system. Since I want the board to be in static equilibrium, I choose the board as my system. Fourth, I choose a formula. Since this is a torque problem (I want to prevent the board from rotating.), I know that I must use the three equations given on the previous page, and use them in the order given. Since there are no horizontal forces, I can throw out the equation with horizontal forces. The equation for the vertical forces leaves me with two unknown variables: d and T.

Now I go to my third equation. But I need to know the torques on my system. In order to find the torques, I must choose a point of rotation. I can choose any point that I want, but, since I need all the forces to act at 90 degrees to their lever arms, I will choose a point on the board. Let’s say that I use the left end of the board as my point of rotation. Now I draw my clockwise and counter-clockwise torques.

Table of Contents

Lecture 1Translational Motion1
1-1Solving a Physics Problem1
1-2Vectors and Scalars2
1-3Adding and Subtracting Vectors2
1-4Multiplying Vectors2
1-5Component Vectors3
1-6Distance-Displacement, Speed-Velocity, Acceleration4
1-7Uniformly Accelerated Motion and Linear Motion7
1-8Graphs of Linear Motion7
1-9Projectile Motion13
1-10Air Resistance14
1-11Equation Summary15
Lecture 2Force17
2-1Mass and Weight17
2-2Center of Mass18
2-3The Nature of Force18
2-4Newton's Laws20
2-5The Law of Universal Gravitation23
2-6Inclined Planes25
2-7Circular Motion and Centripetal Force27
2-8Friction31
2-9Tension32
2-10Hooke's Law32
2-11Equation Summary34
Lecture 3Equilibrium, Torque, and Energy37
3-1Equilibrium37
3-2Systems Not in Equilibrium38
3-3Torque40
3-4Energy44
3-5Systems45
3-6Work45
3-7Conservative and Nonconservative Forces46
3-8Work and Friction47
3-9Examples of Work49
3-10Summary of Work50
3-11Power50
3-12Equation Summary51
Lecture 4Momentum, Machines, and Radioactive Decay53
4-1Momentum53
4-2Collisions53
4-3Reverse Collisions55
4-4Intuition about Collisions56
4-5Impulse57
4-6Machines60
4-7The Ramp60
4-8The Lever61
4-9The Pulley62
4-10Radioactive Decay65
4-11Half-Life65
4-12Types of Radioactive Decay66
4-13Mass Defect67
4-14Fission and Fusion68
4-15Equation Summary69
Lecture 5Fluids and Solids73
5-1Fluids73
5-2Density74
5-3Pressure75
5-4Fluids at Rest76
5-5Hydraulic Lift78
5-6Archimedes' Principle78
5-7Fluids in Motion83
5-8Ideal Fluid83
5-9Non-ideal Fluids (Real Fluids)86
5-10A Method for Greater Understanding of Fluid Flow87
5-11Surface Tension88
5-12Solids91
5-13Thermal Expansion93
5-14Equation Summary94
Lecture 6Waves97
6-1Wave Characteristics97
6-2Superposition, Phase, and Interference103
6-3Simple Harmonic Motion108
6-4The Doppler Effect110
6-5Equation Summary112
Lecture 7Electricity and Magnetism115
7-1Electric Charge115
7-2Movement of Charge123
7-3Circuits123
7-4Power129
7-5AC Current132
7-6Magnetism132
7-7Equation Summary136
Lecture 8Light and Optics139
8-1Light139
8-2Images145
8-3Mirrors and Lenses146
8-4A System for Mirrors and Lenses152
8-5Two-lens Systems155
8-6Using the Diagrams on the Facing Page155
8-7Equation Summary156
30-Minute In-Class Exams159
In-Class Exam for Lecture 1159
In-Class Exam for Lecture 2165
In-Class Exam for Lecture 3171
In-Class Exam for Lecture 4177
In-Class Exam for Lecture 5185
In-Class Exam for Lecture 6191
In-Class Exam for Lecture 7197
In-Class Exam for Lecture 8205
Answers & Explanations to In-Class Exams213
Answers and Scaled Score Conversion for In-Class Exams214
Explanations to In-Class Exam for Lecture 1215
Explanations to In-Class Exam for Lecture 2216
Explanations to In-Class Exam for Lecture 3218
Explanations to In-Class Exam for Lecture 4220
Explanations to In-Class Exam for Lecture 5222
Explanations to In-Class Exam for Lecture 6224
Explanations to In-Class Exam for Lecture 7226
Explanations to In-Class Exam for Lecture 8228
Answers & Explanations to Questions in the Lectures231
Answers to Questions in the Lectures232
Explanations to Questions in Lecture 1233
Explanations to Questions in Lecture 2235
Explanations to Questions in Lecture 3237
Explanations to Questions in Lecture 4239
Explanations to Questions in Lecture 5240
Explanations to Questions in Lecture 6242
Explanations to Questions in Lecture 7243
Explanations to Questions in Lecture 8245
Index249

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