Physics: Principles with Applications (7th Edition) + Solutions
Lots! Much is new and unseen before. Here are the big four:
1. Multiple-choice Questions added to the end of each Chapter. They are not the usual type. These are called MisConceptual Questions because the responses (a, b, c, d, etc.) are intended to include common student misconceptions. Thus they are as much, or more, a learning experience than simply a testing experience.
2. Search and Learn Problems at the very end of each Chapter, after the other Problems. Some are pretty hard, others are fairly easy. They are intended to encourage students to go back and reread some part or parts of the text, and in this search for an answer they will hopefully learn more—if only because they have to read some material again.
3. Chapter-Opening Questions (COQ) that start each Chapter, a sort of “stimulant.” Each is multiple choice, with responses including common misconceptions—to get preconceived notions out on the table right at the start. Where the relevant material is covered in the text, students find an Exercise asking them to return to the COQ to rethink and answer again.
4. Digital. Biggest of all. Crucial new applications. Today we are surrounded by digital electronics. How does it work? If you try to find out, say on the Internet, you won’t find much physics: you may find shallow hand-waving with no real content, or some heavy jargon whose basis might take months or years to understand. So, for the first time, I have tried to explain
• The basis of digital in bits and bytes, how analog gets transformed into digital, sampling rate, bit depth, quantization error, compression, noise (Section 17–10).
• How digital TV works, including how each pixel is addressed for each frame, data stream, refresh rate (Section 17–11).
• Semiconductor computer memory, DRAM, and flash (Section 21–8).
• Digital cameras and sensors—revised and expanded Section 25–1.
• New semiconductor physics, some of which is used in digital devices, including LED and OLED—how they work and what their uses are—plus more on transistors (MOSFET), chips, and technology generation as in 22-nm technology (Sections 29–9, 10, 11). Besides those above, this new seventh edition includes
5. New topics, new applications, principal revisions.
• You can measure the Earth’s radius (Section 1–7).
• Improved graphical analysis of linear motion (Section 2–8).
• Planets (how first seen), heliocentric, geocentric (Section 5–8).
• The Moon’s orbit around the Earth: its phases and periods with diagram (Section 5–9).
• Explanation of lake level change when large rock thrown from boat (Example 10–11).
• Biology and medicine, including:
• Blood measurements (flow, sugar)—Chapters 10, 12, 14, 19, 20, 21;
• Trees help offset CO2 buildup—Chapter 15;
• Pulse oximeter—Chapter 29;
• Proton therapy—Chapter 31;
• Radon exposure calculation—Chapter 31;
• Cell phone use and brain—Chapter 31.
• Colors as seen underwater (Section 24–4).
• Soap film sequence of colors explained (Section 24–8).
• Solar sails (Section 22–6).
• Lots on sports.
• Symmetry—more emphasis and using italics or boldface to make visible.
• Flat screens (Sections 17–11, 24–11).
• Free-electron theory of metals, Fermi gas, Fermi level. New Section 29–6.
• Semiconductor devices—new details on diodes, LEDs, OLEDs, solar cells, compound semiconductors, diode lasers, MOSFET transistors, chips, 22-nm technology (Sections 29–9, 10, 11).
• Cross section (Chapter 31).
• Length of an object is a script rather than normal l, which looks like 1 or I (moment of inertia, current), as in F = I B. Capital L is for angular momentum, latent heat, inductance, dimensions of length [L].
6. New photographs taken by students and instructors (we asked).
7. Page layout: More than in previous editions, serious attention to how each page is formatted. Important derivations and Examples are on facing pages: no turning a page back in the middle of a derivation or Example. Throughout, readers see, on two facing pages, an important slice of physics.
8. Greater clarity: No topic, no paragraph in this book was overlooked in the search to improve the clarity and conciseness of the presentation. Phrases and sentences that may slow down the principal argument have been eliminated: keep to the essentials at first, give the elaborations later.
9. Much use has been made of physics education research. See the new powerful pedagogic features listed first.
10. Examples modified: More math steps are spelled out, and many new Examples added. About 10% of all Examples are Estimation Examples.
11. This Book is Shorter than other complete full-service books at this level. Shorter explanations are easier to understand and more likely to be read.
12. Cosmological Revolution:With generous help from top experts in the field, readers have the latest results.
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