Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Textbook Question
Chapter 6, Problem 19AC
Earth's magnetic field
a. has undergone many reversals in polarity.
b. has always been as it is now.
c. is created beneath Earth’s north geographic pole.
d. is created beneath Earth’s south geographic pole.
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Magnetic Poles: Which one of the following statements is correct?
Group of answer choices
A. Earth's geographic south pole is the south pole of Earth's magnetic field.
B. None of the statements is correct.
C. The north pole of a magnet points towards Earth's geographic north pole.
D. Earth's geographic north pole is the north pole of Earth's magnetic field.
E. The north pole of a magnet points towards Earth's geographic south pole.
The magnetic field of the Earth is believed to come from:
a. Solar wind.b. Solar flares.c. Iron ore deposits in the crust.d. Nickel-iron deposits in the crust.e. Convection currents within the liquid interior.
Which one of the following statements is true?
A. The north pole of a compass needle is actually being attracted to the south geographical pole of the Earth.
B. The north pole of a compass needle is actually being attracted to the north geographical pole of the Earth.
C. The north pole of a compass needle is actually being attracted to the south magnetic pole of the Earth.
D. The north pole of a compass needle is actually being attracted to the north magnetic pole of the Earth.
Chapter 6 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 6 - 1. Electrostatic charge results from
a. transfer...Ch. 6 - 2. The unit of electric charge is the
a. volt.
b....Ch. 6 - 3. An electric field describes the condition of...Ch. 6 - 4. A material that has electrons that are free to...Ch. 6 - 5. An example of an electrical insulator is
a....Ch. 6 - 6. The electrical potential difference between two...Ch. 6 - 7. The rate at which an electric current flows...Ch. 6 - 8. The law that predicts the behavior of...Ch. 6 - 9. What type of electric current is produced by...Ch. 6 - 10. The electrical resistance of a conductor is...
Ch. 6 - 11. According to Ohm’s law, what must be greater...Ch. 6 - 12. A kilowatt-hour is a unit of
a. power.
b....Ch. 6 - 13. If you multiply volts by amps, the answer will...Ch. 6 - 14. Units of joules per second are a measure...Ch. 6 - 15. A lodestone is a natural magnet that...Ch. 6 - The north pole of a suspended or floating bar...Ch. 6 - 17. A current-carrying wire always has
a. a...Ch. 6 - 18. Magnetism is produced by
a. an excess of north...Ch. 6 - 19. Earth's magnetic field
a. has undergone many...Ch. 6 - 20. The strength of a magnetic field around a...Ch. 6 - 21. Reverse the direction of a current in a wire,...Ch. 6 - 22. The operation of which of the following...Ch. 6 - Prob. 23ACCh. 6 - When a loop of wire cuts across magnetic field...Ch. 6 - 25. A step-up transformer steps up the
a....Ch. 6 - Prob. 26ACCh. 6 - 27. Electric power companies step up the voltage...Ch. 6 - 28. A solar cell
a. produces electricity...Ch. 6 - 29. Which of the following is most likely to...Ch. 6 - 30. Which of the following units are measures of...Ch. 6 - 31. You are using which description of a current...Ch. 6 - 32. In an electric current, the electrons are...Ch. 6 - 33. In which of the following currents is there no...Ch. 6 - Prob. 34ACCh. 6 - 35. A permanent magnet has magnetic properties...Ch. 6 - 36. A current-carrying wire has a magnetic field...Ch. 6 - 37. When an object acquires a negative charge, it...Ch. 6 - 38. A positive and a negative charge are initially...Ch. 6 - 39. To be operational, a complete electric circuit...Ch. 6 - 40. Which variable is inversely proportional to...Ch. 6 - 41. Which of the following is not considered to...Ch. 6 - 42. A piece of iron can be magnetized or...Ch. 6 - 43. Earth’s magnetic field is believed to...Ch. 6 - 44. Electromagnetic induction takes place...Ch. 6 - 45. The current in the secondary coil of a...Ch. 6 - 46. An electromagnet uses.
a. a magnetic field to...Ch. 6 - 47. A transformer.
a. changes the voltage of a...Ch. 6 - 48. A parallel circuit has
a. wires that are lined...Ch. 6 - 49. In which type of circuit would you expect a...Ch. 6 - 50. In which type of circuit would you expect the...Ch. 6 - 1. Explain why a balloon that has been rubbed...Ch. 6 - 2. Explain what is happening when you walk across...Ch. 6 - 3. Why does a positively or negatively charged...Ch. 6 - 4. Explain how you that it is an electric field,...Ch. 6 - 5. Is a kWh a unit of power or a unit of work?...Ch. 6 - 6. What is the difference between ac and dc?
Ch. 6 - Prob. 7QFTCh. 6 - 8. How is an unmagnetized piece of iron different...Ch. 6 - 9. Explain why the electric utility company...Ch. 6 - 10. Describe how an electric generator is able to...Ch. 6 - Prob. 11QFTCh. 6 - 12. Explain what causes an electron to move toward...Ch. 6 - 1. Explain how the model of electricity as...Ch. 6 - 2. What are the significant similarities and...Ch. 6 - 3. Transformers usually have signs warning,...Ch. 6 - 4. Will a fuel cell be the automobile engine of...Ch. 6 - 5. Analyze the apparent contradiction in the...Ch. 6 - 6. What are the basic similarities and differences...Ch. 6 - 7. What are the advantages and disadvantages of...Ch. 6 - A rubber balloon has become negatively charged...Ch. 6 - Prob. 2PEACh. 6 - Prob. 3PEACh. 6 - Prob. 4PEACh. 6 - Prob. 5PEACh. 6 - Prob. 6PEACh. 6 - Prob. 7PEACh. 6 - Prob. 8PEACh. 6 - Prob. 9PEACh. 6 - Prob. 10PEACh. 6 - Prob. 11PEACh. 6 - Prob. 12PEACh. 6 - Prob. 13PEACh. 6 - Prob. 14PEACh. 6 - Prob. 15PEACh. 6 - Prob. 16PEACh. 6 - Prob. 17PEACh. 6 - 1. An inflated rubber balloon is rubbed with a...Ch. 6 - 2. What is the force between two balloons with a...Ch. 6 - 3. How much energy is available from a 12 V...Ch. 6 - 4. A wire carries a current of 2.0 A. at what rate...Ch. 6 - Prob. 5PEBCh. 6 - 6. There is a current of 0.83 A through a...Ch. 6 - 7. What is the voltage across a 60.0 resistor with...Ch. 6 - 7. What is the voltage across a 60.0 resistor...Ch. 6 - 9. A lightbulb designed to operate in a 120.0 V...Ch. 6 - 10. What is the monthly energy cost of leaving a...Ch. 6 - 11. An electric motor draws a current of 11.5 A in...Ch. 6 - 12. A swimming pool requiring a 2.0 hp motor to...Ch. 6 - 13. Is it possible for two people to...Ch. 6 - 14. A step-up transformer has a primary coil with...Ch. 6 - 15. The step-down transformer in a local...Ch. 6 - 16. A step-down transformer connected to a 120 V...Ch. 6 - 17. What is the power of an 8.0-ohm bulb when...
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- (a) What does the Earths magnetic field resemble, and where are its poles? (b) Why do airline pilots and ship navigators guided by compasses have to make corrections to stay on a course charted on a map?arrow_forwardThere are regions where the magnetic field of earth is almost perpendicular to the surface of Earth. What difficulty does this cause in the use of a compass?arrow_forwardVolcanic and other such activity at the mid-Athletic ridge extrudes material to fill the gap between separating tectonic plates associated with continental drift. The magnetization of rocks is found to reverse in a coordinated manner with distance from the ridge. What does this imply about the Earth's magnetic field and how could the knowledge of the spreading rate he used to give its historical record?arrow_forward
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- 1. What is Gauss's law for magnetism? A. The total magnetic flux through a closed surface is equal to zero. B. The magnetic field at a point due to a current-carrying conductor is proportional to the current and inversely proportional to the distance from the conductor. C. The magnetic field at a point due to a current-carrying conductor is proportional to the length of the conductor and inversely proportional to the distance from the conductor. D. The magnetic field at a point due to a current-carrying conductor is proportional to the current and directly proportional to the distance from the conductor. E. None 2.A current-carrying wire is bent into a circular loop. What is the direction of the magnetic field inside the loop? A. Clockwise B. Counterclockwise C. Zero D. E. Cannot be determined None 3. A long, straight wire carries a current of 5 A. What is the magnetic field at a distance of 10 cm from the wire? 1.26 x 10^-6 T A. B. 3.14 × 10^-5 T C. 5.64 x 10^-5 T D. 1.13 x 10^-4 T E.…arrow_forward3. If the earth's magnetism is assumed to originate from a large circular loop of current within the earth, then the plane of the current loop must be oriented to the earth's magnetic axis, and the direction of the current around the loop (when looking down on the loop from the north magnetic pole) is a. parallel, clockwise b. parallel, counterclockwise c. perpendicular, clockwise d. perpendicular, counterclockwise 4. Suppose that you have two bars. Bar 1 is a permanent magnet and bar 2 is not a magnet, but is made from a ferromagnetic material like iron. A third bar (bar 3), which is known to be a permanent magnet, is brought close to one end of bar 1 and then to one end of bar 2. Which one of the following statements is true? a. Bars 1 and 3 will either be attracted to or repelled from each other, while bars 2 and 3 will always be repelled from each other. b. Bars 1 and 3 will either be attracted to or repelled from each other, while bars 2 and 3 will always be attracted to each…arrow_forwardGeophysicists today generally attribute the existence of the earth’s magnetic field to… a. convection currents within the earth’s outer core liquid interior b. the earth's solid iron core c. iron ore deposits in the crust d. cosmic rays from the sunarrow_forward
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