Physics: Principles and Problems
9th Edition
Elliott, Haase, Harper, Herzog, Margaret Zorn, Nelson, Schuler, Zitzewitz
ISBN: 9780078458132
Textbook solutions
Chapter 1: A Physics Toolkit
Section 1.1: Mathematics and Physics
Section 1.2: Measurement
Section 1.3: Graphing Data
Page 24: Assessment
Page 29: Standardized Test Practice
Page 5: Practice Problems
Page 10: Section Review
Page 18: Practice Problems
Page 19: Section Review
Chapter 2: Representing Motion
Section 2.1: Picturing Motion
Section 2.2: Where and When?
Section 2.3: Position-Time Graphs
Section 2.4: How Fast?
Page 52: Assessment
Page 55: Standardized Test Practice
Page 39: Practice Problems
Page 42: Section Review
Page 45: Practice Problems
Page 47: Section Review
Chapter 3: Accelerated Motion
Section 3.1: Acceleration
Section 3.2: Motion with Constant Acceleration
Section 3.3: Free Fall
Page 80: Assessment
Page 85: Standardized Test Practice
Page 61: Practice Problems
Page 64: Section Review
Page 65: Practice Problems
Page 71: Section Review
Page 74: Practice Problems
Page 75: Section Review
Chapter 4: Forces in One Dimension
Section 4.1: Force and Motion
Section 4.2: Using Newton’s Laws
Section 4.3: Interaction Forces
Page 112: Assessment
Page 117: Standardized Test Practice
Page 89: Practice Problems
Page 95: Section Review
Page 97: Practice Problems
Page 101: Section Review
Page 104: Practice Problems
Page 107: Section Review
Chapter 5: Forces in Two Dimensions
Section 5.1: Vectors
Section 5.2: Friction
Section 5.3: Force and Motion in Two Dimensions
Page 140: Assessment
Page 145: Standardized Test Practice
Page 121: Practice Problems
Page 125: Section Review
Page 128: Practice Problems
Page 130: Section Review
Page 133: Practice Problems
Page 135: Section Review
Chapter 6: Motion in Two Dimensions
Section 6.1: Projectile Motion
Section 6.2: Circular Motion
Section 6.3: Relative Velocity
Page 164: Assessment
Page 169: Standardized Test Practice
Page 150: Practice Problems
Page 152: Section Review
Page 156: Section Review
Page 156: Practice Problems
Page 159: Practice Problems
Page 159: Section Review
Chapter 7: Gravitation
Section 7.1: Planetary Motion and Gravitation
Section 7.2: Using the Law of Universal Gravitation
Page 190: Assessment
Page 195: Standardized Test Practice
Page 174: Practice Problems
Page 178: Section Review
Page 181: Practice Problems
Page 185: Section Review
Chapter 8: Rotational Motion
Section 8.1: Describing Rotational Motion
Section 8.2: Rotational Dynamics
Section 8.3: Equilibrium
Page 222: Assessment
Page 227: Standardized Test Practice
Page 200: Section Review
Page 200: Practice Problems
Page 203: Practice Problems
Page 210: Section Review
Page 215: Practice Problems
Page 217: Section Review
Chapter 9: Momentum and Its Conservation
Section 9.1: Impulse and Momentum
Section 9.2: Conservation of Momentum
Page 250: Assessment
Page 255: Standardized Test Practice
Page 233: Practice Problems
Page 235: Section Review
Page 238: Practice Problems
Page 245: Section Review
Chapter 10: Energy, Work, and Simple Machines
Section 10.1: Energy and Work
Section 10.2: Machines
Page 278: Assessment
Page 283: Standardized Test Practice
Page 261: Practice Problems
Page 265: Section Review
Page 272: Practice Problems
Page 273: Section Review
Chapter 11: Energy and Its Conservation
Section 11.1: The Many Forms of Energy
Section 11.2: Conservation of Energy
Page 306: Assessment
Page 311: Standardized Test Practice
Page 287: Practice Problems
Page 292: Section Review
Page 297: Practice Problems
Page 301: Section Review
Chapter 12: Thermal Energy
Section 12.1: Temperature and Thermal Energy
Section 12.2: Changes of State and the Laws of Thermodynamics
Page 336: Assessment
Page 339: Standardized Test Practice
Page 317: Practice Problems
Page 322: Section Review
Page 325: Practice Problems
Page 331: Section Review
Chapter 13: State of Matter
Section 13.1: Properties of Fluids
Section 13.2: Forces Within Liquids
Section 13.3: Fluids at Rest and in Motion
Section 13.4: Solids
Page 368: Assessment
Page 373: Standardized Test Practice
Page 344: Practice Problems
Page 348: Section Review
Page 353: Practice Problems
Page 358: Section Review
Page 362: Practice Problems
Page 363: Section Review
Chapter 14: Vibrations and Waves
Section 14.1: Periodic Motion
Section 14.2: Wave Properties
Section 14.3: Wave Behavior
Page 396: Assessment
Page 401: Section Review
Page 386: Practice Problems
Page 386: Section Review
Chapter 15: Sound
Section 15.1: Properties of Detection of Sound
Section 15.2: The Physics of Music
Page 424: Assessment
Page 429: Standardized Test Practice
Page 405: Practice Problems
Page 410: Section Review
Page 416: Practice Problems
Page 419: Section Review
Chapter 16: Fundamentals of Light
Section 16.1: Illumination
Section 16.2: The Wave Nature of Light
Page 452: Assessment
Page 455: Standardized Test Practice
Page 436: Practice Problems
Page 438: Section Review
Page 447: Section Review
Page 447: Practice Problems
Chapter 17: Reflections and Mirrors
Section 17.1: Reflection from Plane Mirrors
Section 17.2: Curved Mirrors
Page 478: Assessment
Page 483: Standardized Test Practice
Page 460: Practice Problems
Page 463: Section Review
Page 469: Practice Problems
Page 473: Section Review
Chapter 18: Refraction and lenses
Section 18.1: Refraction of Light
Section 18.2: Convex and Concave Lenses
Section 18.3: Applications of Lenses
Page 508: Assessment
Page 513: Standardized Test Practice
Page 487: Practice Problems
Page 492: Section Review
Page 496: Practice Problems
Page 499: Section Review
Chapter 19: Interference and Diffraction
Section 19.1: Interference
Section 19.2: Diffraction
Page 536: Assessment
Page 539: Standardized Test Practice
Page 519: Practice Problems
Page 523: Section Review
Page 526: Practice Problems
Page 531: Section Review
Chapter 20: Static Electricity
Section 20.1: Electric Charge
Section 20.2: Electric Force
Page 558: Assessment
Page 561: Standardized Test Practice
Page 552: Practice Problems
Page 553: Section Review
Chapter 21: Electric Fields
Section 21.1: Creating and Measuring Electric Fields
Section 21.2: Applications of Electric Fields
Page 584: Assessment
Page 589: Standardized Test Practice
Page 565: Practice Problems
Page 568: Section Review
Page 571: Practice Problems
Page 579: Section Review
Chapter 22: Current Electricity
Section 22.1: Current and Circuits
Section 22.2: Using Electric Energy
Page 610: Assessment
Page 615: Standardized Test Practice
Page 594: Practice Problems
Page 600: Section Review
Page 603: Practice Problems
Page 605: Section Review
Chapter 23: Series and Parallel Circuits
Section 23.1: Simple Circuits
Section 23.2: Applications of Circuits
Page 636: Assessment
Page 641: Standardized Test Practice
Page 619: Practice Problems
Page 626: Section Review
Page 630: Practice Problems
Page 631: Section Review
Chapter 24: Magnetic Fields
Section 24.1: Magnets: Permanent and Temporary
Section 24.2: Forces Caused by Magnetic Fields
Page 664: Assessment
Page 669: Standardized Test Practice
Page 647: Practice Problems
Page 651: Section Review
Page 654: Practice Problems
Page 659: Section Review
Chapter 25: Electromagnetic Induction
Section 25.1: Electric Current from Changing Magnetic Fields
Section 25.2: Changing Magnetic Fields Induce EMF
Page 690: Assessment
Page 695: Standardized Test Practice
Page 675: Practice Problems
Page 678: Section Review
Page 684: Practice Problems
Page 685: Section Review
Chapter 26: Electromagnetism
Section 26.1: Interactions of Electric and Manetic Fields and Matter
Section 26.2: Electric and Magnetic Fields in Space
Page 718: Assessment
Page 721: Standardized Test Practice
Page 700: Practice Problems
Page 704: Section Review
Page 706: Practice Problems
Page 713: Section Review
Chapter 27: Quantum Theory
Section 27.1: A Particle Model of Waves
Section 27.2: Matter Waves
Page 742: Assessment
Page 745: Standardized Test Practice
Page 730: Practice Problems
Page 734: Section Review
Page 736: Practice Problems
Page 737: Section Review
Chapter 28: The Atom
Section 28.1: The Bohr Model of the Atom
Section 28.2: The Quantum Model of the Atom
Page 770: Assessment
Page 773: Standardized Test Practice
Page 757: Practice Problems
Page 759: Section Review
Chapter 29: Solid-State Electronics
Section 29.1: Conduction in Solids
Section 29.2: Electronic Devices
Page 794: Assessment
Page 797: Standardized Test Practice
Page 778: Practice Problems
Page 783: Section Review
Page 786: Practice Problems
Page 789: Section Review
Chapter 30: Nuclear Physics
Section 30.1: The Nucleus
Section 30.2: Nuclear Decay and Reactions
Section 30.3: The Building Blocks of Matter
Page 828: Assessment
Page 831: Standardized Test Practice
Page 801: Practice Problems
Page 805: Section Review
Page 808: Practice Problems
Page 814: Section Review
Page 821: Practice Problems
Page 823: Section Review
All Solutions
Page 651: Section Review
Exercise 10
Solution 1
Solution 2
Step 1
1 of 3
We need to discuss whether the magnetic field is real or just a means of scientific modeling.
Step 2
2 of 3
The fact that magnetic field is represented by the magnetic field lines which are modelling tool can sometimes cause confusion,
Step 3
3 of 3
The magnetic field is real, its effects are real and detectable.
It is also measurable quantity.
It is also measurable quantity.
Step 1
1 of 2
The magnetic field is a real, measurable quantity which is represented by the field lines which are used as modelling tool.
Result
2 of 2
Yes, the magnetic field is real.
Exercise 11
Step 1
1 of 2
In today’s world there is a plenty of magnetic forces around us. We can use a basic compass to detect most of them. Huge electromagnets are used for moving large metal object thus defying gravity, we have levitating globes, one can detect magnetic field bellow the electric lines. And of course the Earth’s magnetic field is everywhere around us.
Result
2 of 2
We can find Earth’s magnetic force wherever we go, we can see magnetic forces of huge electromagnets. For the detection we can simply use a compass.
Exercise 12
Solution 1
Solution 2
Step 1
1 of 3
A current carrying wire is passed through a plate on which there are iron filling sprinked. We need to discuss how will the introduction of another equal wire, close and parallel to the first one affect the magnetic field.
And how it will affect it if the currents flow in opposite direction.
And how it will affect it if the currents flow in opposite direction.
Step 2
2 of 3
If the currents flow in the **same direction**, by following the right-hand rule, the effects of both wires will sum, meaning that there will be **reduced** magnetic field in the area **between** the wires, since fields are in opposite direction at that section and **stronger** on the area on the **outside**, further from the wires.
Step 3
3 of 3
If the currents flow in **opposite** direction, again using the right-hand rule, the field will be **stronger between** the wires since their fields will add up and **weaker on the outside**, further from the wires since magnetic fields act in opposite directions in those areas.
Step 1
1 of 2
In order to answer these questions we are going to use the right-hand rule which tells us that when the currents are parallel and flow in the same direction the resulting magnetic fields are in opposite directions between the wires and in the same direction outside of the two-wire system. That means when in the same direction the magnetic field of the first wire will be reduced in the area towards the second wire and larger on the area opposite of the second wire.
When the currents are flowing in opposite directions the field is larger towards the second wire and smaller outside the of the two-wire system.
Result
2 of 2
1) Same direction currents: the field is smaller between the wires and larger outside of the wires.
2) Opposite direction currents: the field is smaller outside of the system and larger between the wires.
Exercise 13
Solution 1
Solution 2
Step 1
1 of 3
We need to describe right-hand rule used to determine the direction of magnetic field caused by a current flowing through a straight wire.
Step 2
2 of 3
The right-hand rule is a rule that was invented in order to more easily follow the convention regarding the magnetic fields.
Magnetic fields are vector fields, and in a scenario where a conductor is a straight wire, a circular field is created. In order to find its direction, we will use right-hand rule.
Magnetic fields are vector fields, and in a scenario where a conductor is a straight wire, a circular field is created. In order to find its direction, we will use right-hand rule.
Step 3
3 of 3
If we grab a wire with our right hand, with **thumb** pointing in the **direction of the current**, and wrap the remaining **fingers** around the wire, they will show the direction of the **magnetic field**.
Step 1
1 of 2
The right hand rule can be summarized as follows. If we grab the current carrying conductor with our right hand with our thumb pointing in the direction of the current the field lines follow the direction of our fingers.
Result
2 of 2
If we grab the conductor with our right hand with our thumb in the direction of the current then our fingers mimic the field lines.
Exercise 14
Solution 1
Solution 2
Step 1
1 of 2
We need to determine if there will be observable differences if we switch polarity of a magnet placed under a glass sheet covered with iron fillings.
Step 2
2 of 2
When the magnet is turned on, the iron fillings will form a shape of the field lines following them from one pole to another.
Iron fillings will fit on the field lines regardless of the pole orientation, meaning that there will be **no visible change** in case we switch poles of the electromagnet.
Iron fillings will fit on the field lines regardless of the pole orientation, meaning that there will be **no visible change** in case we switch poles of the electromagnet.
Step 1
1 of 2
There would be no visible changes because the field lines shape doesn’t depend on the magnetic polarity.
Result
2 of 2
There would be no visible changes whatsoever.
Exercise 15
Solution 1
Solution 2
Step 1
1 of 3
We have two parallel, horizontal metal rods, one above the other. Upper rod can move vertically.
We need to discuss why is it possible for the top rod to fall down when its direction is reversed.
We also need to discuss what would be the explanation for a scenario in which a top rod is replaced with another rod that falls on the lower one no matter its orientation.
We need to discuss why is it possible for the top rod to fall down when its direction is reversed.
We also need to discuss what would be the explanation for a scenario in which a top rod is replaced with another rod that falls on the lower one no matter its orientation.
Step 2
2 of 3
The only explanation for the first one is that both rods are actually bar magnets. When the upper one floats on the lower one, their poles are **orientated the same way**; N above N and S above S. This way rods are **repelling** from each other.
When we rotate it front to back, N comes above S and vice versa which causes them to **attract** and a rod to fall down.
When we rotate it front to back, N comes above S and vice versa which causes them to **attract** and a rod to fall down.
Step 3
3 of 3
If the other rod falls down on the lower one no matter its orientation, it simply means it is **not magnetized**. It can be made out of **any kind of material**, because it will fall down due to **gravity** no matter the magnetic attraction or the lack of thereof.
Step 1
1 of 3
a.) The rods are two bar magnets.
When the top rod floats above the bottom one, the north end is above the other north end, and south above south, causing repulsion. When the rods stick together, the north end is above the south end, and south above north, causing attraction.
Step 2
2 of 3
b.) The rod is made of iron, cobalt, or nickel- metals with magnetic properties.
Result
3 of 3
a.) The rods are bar magnets
b.) Iron, nickel, or cobalt
b.) Iron, nickel, or cobalt
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