An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Chapter 8, Problem 12E
A flashlight uses batteries that add up to 3.0 V and has a power output of 0.50 W.
- (a) How much current is drawn from the batteries?
- (b) What is the effective resistance of the flashlight?
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Chapter 8 Solutions
An Introduction to Physical Science
Ch. 8.1 - What is the difference between the law of charges...Ch. 8.1 - Prob. 2PQCh. 8.2 - Prob. 1PQCh. 8.2 - Prob. 2PQCh. 8.2 - A coffeemaker draws 10 A of current operating at...Ch. 8.3 - Prob. 1PQCh. 8.3 - Prob. 2PQCh. 8.3 - Prob. 8.2CECh. 8.4 - How are the law of poles and the law of charges...Ch. 8.4 - Where is the Earth's north magnetic pole located?
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 - Prob. 8.3CECh. 8 - KEY TERMS 1. electric charge (8.1) 2. electrons 3....Ch. 8 - Prob. BMCh. 8 - Prob. CMCh. 8 - Prob. DMCh. 8 - Prob. EMCh. 8 - Prob. FMCh. 8 - Prob. GMCh. 8 - Prob. HMCh. 8 - Prob. IMCh. 8 - Prob. JMCh. 8 - Prob. KMCh. 8 - Prob. LMCh. 8 - Prob. MMCh. 8 - Prob. NMCh. 8 - Prob. OMCh. 8 - Prob. PMCh. 8 - Prob. QMCh. 8 - Prob. RMCh. 8 - Prob. SMCh. 8 - Prob. TMCh. 8 - Prob. UMCh. 8 - Prob. VMCh. 8 - Prob. WMCh. 8 - Prob. XMCh. 8 - Prob. YMCh. 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 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MCCh. 8 - What type of energy conversion does a motor...Ch. 8 - What type of energy conversion does a generator...Ch. 8 - Prob. 13MCCh. 8 - A transformer with more windings on the primary...Ch. 8 - Prob. 1FIBCh. 8 - ___ are neither good conductors nor good...Ch. 8 - Prob. 3FIBCh. 8 - Voltage is defined as work per___. (8.2)Ch. 8 - An electric circuit that is not a complete path is...Ch. 8 - Prob. 6FIBCh. 8 - Prob. 7FIBCh. 8 - Prob. 8FIBCh. 8 - Prob. 9FIBCh. 8 - Prob. 10FIBCh. 8 - Prob. 11FIBCh. 8 - Prob. 12FIBCh. 8 - Prob. 1SACh. 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 - Prob. 5SACh. 8 - Prob. 6SACh. 8 - Prob. 7SACh. 8 - If the drift velocity in a conductor is so small,...Ch. 8 - Prob. 9SACh. 8 - Why are home appliances connected in parallel...Ch. 8 - Compare the safety features of (a) fuses, (b)...Ch. 8 - Prob. 12SACh. 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 - Prob. 16SACh. 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 - Prob. 21SACh. 8 - Prob. 22SACh. 8 - Prob. 23SACh. 8 - Body injury from electricity depends on the...Ch. 8 - Prob. 1VCCh. 8 - Prob. 1AYKCh. 8 - Prob. 2AYKCh. 8 - Answer both parts of Question 2 for a charge of +1...Ch. 8 - An old saying about electrical safety states that...Ch. 8 - Prob. 5AYKCh. 8 - Prob. 6AYKCh. 8 - Prob. 7AYKCh. 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 - Prob. 8ECh. 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 - Prob. 14ECh. 8 - A 24- component is connected to a 12-V battery....Ch. 8 - Prob. 16ECh. 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 - Prob. 20ECh. 8 - A student in the laboratory connects a 10-...Ch. 8 - Prob. 22ECh. 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 - Prob. 25ECh. 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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- The shear leg derrick is used to haul the 200-kg net of fish onto the dock as shown in. Assume the force in each leg acts along its axis. 5.6 m. 4 m- B Part A Determine the compressive force along leg AB. Express your answer to three significant figures and include the appropriate units. FAB = Value Submit Request Answer Part B Units ? Determine the compressive force along leg CB. Express your answer to three significant figures and include the appropriate units. FCB= Value Submit Request Answer Part C ? Units Determine the tension in the winch cable DB. Express your answer with the appropriate units. 2marrow_forwardPart A (Figure 1) shows a bucket suspended from a cable by means of a small pulley at C. If the bucket and its contents have a mass of 10 kg, determine the location of the pulley for equilibrium. The cable is 6 m long. Express your answer to three significant figures and include the appropriate units. Figure 4 m B НА x = Value Submit Request Answer Provide Feedback < 1 of 1 T 1 m Units ?arrow_forwardThe particle in is in equilibrium and F4 = 165 lb. Part A Determine the magnitude of F1. Express your answer in pounds to three significant figures. ΑΣΦ tvec F₁ = Submit Request Answer Part B Determine the magnitude of F2. Express your answer in pounds to three significant figures. ΑΣΦ It vec F2 = Submit Request Answer Part C Determine the magnitude of F3. Express your answer in pounds to three significant figures. ? ? lb lb F₂ 225 lb 135° 45° 30° -60°-arrow_forward
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