BuyFind

An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137
BuyFind

An Introduction to Physical Science

14th Edition
James Shipman + 3 others
Publisher: Cengage Learning
ISBN: 9781305079137

Solutions

Chapter 8, Problem 19SA
Textbook Problem

Describe the basic principle of a dc electric motor.

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Chapter 8 Solutions

An Introduction to Physical Science
Ch. 8.5 - What are the two basic principles of...Ch. 8.5 - What's the difference between a motor and a...Ch. 8.5 - Suppose the transformer in Example 8.3 were...Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - Which of the following has a positive (+) charge?...Ch. 8 - Two equal positive charges are placed equidistant...Ch. 8 - In a dc circuit, how do electrons move? (8.2) (a)...Ch. 8 - What is a unit of voltage? (8.2) (a) joule (b)...Ch. 8 - The ohm is another name for which of the...Ch. 8 - Appliances with heating elements require which of...Ch. 8 - The greatest equivalent resistance occurs when...Ch. 8 - Given three resistances, the greatest current...Ch. 8 - If you look directly at the north pole end of a...Ch. 8 - What is the variation in the location of the...Ch. 8 - What type of energy conversion does a motor...Ch. 8 - What type of energy conversion does a generator...Ch. 8 - Which of the following is true of a step-up...Ch. 8 - A transformer with more windings on the primary...Ch. 8 - An object with a deficiency of electrons is ___...Ch. 8 - ___ are neither good conductors nor good...Ch. 8 - The unit of watt can be expressed in electrical...Ch. 8 - Voltage is defined as work per___. (8.2)Ch. 8 - An electric circuit that is not a complete path is...Ch. 8 - The unit of resistance is the ___. (8.2)Ch. 8 - Another name for joule heat is ___ losses. (8.2)Ch. 8 - A battery-powered device uses ___ current. (8.3)Ch. 8 - In a circuit with resistances connected in...Ch. 8 - A material ceases to be ferromagnetic above the...Ch. 8 - Magnetic north is generally in the direction of...Ch. 8 - A step-up transformer has more windings on the ___...Ch. 8 - Which two particles that make up atoms have about...Ch. 8 - A large charge +Q and a small charge q are a short...Ch. 8 - Explain how a charged rubber comb attracts bits of...Ch. 8 - Why do clothes sometimes stick together when...Ch. 8 - Distinguish between electric potential energy and...Ch. 8 - What are two things that are required for there to...Ch. 8 - How does joule heat vary with increasing and...Ch. 8 - If the drift velocity in a conductor is so small,...Ch. 8 - Distinguish between alternating current and direct...Ch. 8 - Why are home appliances connected in parallel...Ch. 8 - Compare the safety features of (a) fuses, (b)...Ch. 8 - Is it safe to stay inside a car during a lightning...Ch. 8 - Sometimes resistances in a circuit are described...Ch. 8 - Why do iron filings show magnetic field patterns?Ch. 8 - Compare the law of charges and the law of poles.Ch. 8 - (a) What is a ferromagnetic material? (b) Why does...Ch. 8 - What is the principle of an electromagnet?Ch. 8 - (a) What does the Earths magnetic field resemble,...Ch. 8 - Describe the basic principle of a dc electric...Ch. 8 - What happens (a) when a proton moves parallel to a...Ch. 8 - What is the principle of a transformer, and how...Ch. 8 - What would happen if electric power were...Ch. 8 - Why can birds perch on high-voltage power lines...Ch. 8 - Body injury from electricity depends on the...Ch. 8 - Visualize the connections and give answers in the...Ch. 8 - What is the cause of static cling in clothes, and...Ch. 8 - Two negative charges of 1 C each are placed at...Ch. 8 - Answer both parts of Question 2 for a charge of +1...Ch. 8 - An old saying about electrical safety states that...Ch. 8 - The following are incandescent light bulb...Ch. 8 - Show that the resistance that is equivalent to two...Ch. 8 - What happens when you cut a bar magnet in half? If...Ch. 8 - Suppose you are on an expedition to locate the...Ch. 8 - How many electrons make up one coulomb of charge?...Ch. 8 - An object has one million more electrons than...Ch. 8 - What are the forces on two charges of +0.60 C and...Ch. 8 - Find the force of electrical attraction between a...Ch. 8 - There is a net passage of 4.8 1018 electrons by a...Ch. 8 - A current of 1.50 A flows in a conductor for 6.5...Ch. 8 - To separate a 0.25-C charge from another charge,...Ch. 8 - What is the voltage of the 0.25-C charge in...Ch. 8 - If an electrical component with a resistance of 50...Ch. 8 - What battery voltage is necessary to supply 0.50 A...Ch. 8 - A car radio draws 0.25 A of current in the autos...Ch. 8 - A flashlight uses batteries that add up to 3.0 V...Ch. 8 - How much does it cost to run a 1500-W hair dryer...Ch. 8 - A refrigerator using 1000 W runs one-eighth of the...Ch. 8 - A 24- component is connected to a 12-V battery....Ch. 8 - In Exercise 15, using the equation given in the...Ch. 8 - The heating element of an iron operates at 110 V...Ch. 8 - A 100-W light bulb is turned on. It has an...Ch. 8 - Two resistors with values of 25 and 35 ,...Ch. 8 - Suppose the two resistors in Exercise 19 were...Ch. 8 - A student in the laboratory connects a 10-...Ch. 8 - The student in Exercise 21 repeats the experiment...Ch. 8 - A 30.0- resistor and a 60.0- resistor in series...Ch. 8 - A 30.0- resistor and a 60.0- resistor in parallel...Ch. 8 - A transformer has 300 turns on its secondary and...Ch. 8 - A transformer has 600 turns on its primary and 200...Ch. 8 - A transformer with 1000 turns in its primary coil...Ch. 8 - A power company transmits current through a...

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