Modified Mastering Physics with Pearson eText -- Standalone Access Card -- for College Physics: A Strategic Approach (4th Edition)

4th Edition

ISBN: 9780134724744

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter 23, Problem 61GP

Batteries are recharged by connecting them to a power supply (i.e., another battery) of greater emf in such a way that the current flows into the positive terminal of the battery being recharged, as was shown in Example 23.1. This reverse current through the battery replenishes its chemicals. The current is kept fairly low so as not to overheat the battery being recharged by dissipating energy in its internal resistance.

a. Suppose the real battery of Figure P23.55 is rechargeable. What emf power supply should be used for a 0.75 A recharging current?

b. If this power supply charges the battery for 10 minutes, how much energy goes into the battery? How much is dissipated as thermal energy in the internal resistance?

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Chapter 23, Problem 60GP

Chapter 23, Problem 63GP

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Part C Find the height yi from which the rock was launched. Express your answer in meters to three significant figures. Learning Goal: To practice Problem-Solving Strategy 4.1 for projectile motion problems. A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration. PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model. VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ. SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…

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Chapter 23 Solutions

Modified Mastering Physics with Pearson eText -- Standalone Access Card -- for College Physics: A Strategic Approach (4th Edition)

Ch. 23 - Prob. 1CQ Ch. 23 - Prob. 2CQ Ch. 23 - Current Iin flows into three resistors connected...Ch. 23 - The circuit in Figure Q23.4 has two resistors,...Ch. 23 - The circuit in Figure Q23.5 has a battery and two...Ch. 23 - Prob. 6CQ Ch. 23 - Prob. 7CQ Ch. 23 - In the circuit shown in Figure Q23.6, bulbs A and...Ch. 23 - Figure Q23.7 shows two circuits. The two batteries...Ch. 23 - Figure Q23.8 shows two circuits. The two batteries...

Ch. 23 - a. In Figure Q23.9, what fraction of current I...Ch. 23 - Prob. 12CQ Ch. 23 - Prob. 13CQ Ch. 23 - Prob. 14CQ Ch. 23 - Prob. 15CQ Ch. 23 - Prob. 16CQ Ch. 23 - Prob. 17CQ Ch. 23 - Prob. 18CQ Ch. 23 - Prob. 19CQ Ch. 23 - Prob. 20CQ Ch. 23 - Prob. 21CQ Ch. 23 - Prob. 22CQ Ch. 23 - Prob. 23CQ Ch. 23 - Prob. 24CQ Ch. 23 - Prob. 25CQ Ch. 23 - Prob. 26CQ Ch. 23 - Prob. 27CQ Ch. 23 - Prob. 28CQ Ch. 23 - Prob. 29CQ Ch. 23 - A device to make an electrical measurement of skin...Ch. 23 - Consider the model of nerve conduction in...Ch. 23 - Adding a myelin sheath to an axon results in...Ch. 23 - Prob. 34MCQ Ch. 23 - Prob. 35MCQ Ch. 23 - Prob. 36MCQ Ch. 23 - A metal wire of resistance R is cut into two...Ch. 23 - Prob. 38MCQ Ch. 23 - Prob. 39MCQ Ch. 23 - If a cells membrane thickness doubles but the cell...Ch. 23 - If a cells diameter is reduced by 50% without...Ch. 23 - Prob. 42MCQ Ch. 23 - Draw a circuit diagram tor the circuit of Figure...Ch. 23 - Draw a circuit diagram for the circuit of Figure...Ch. 23 - Draw a circuit diagram for the circuit of Figure...Ch. 23 - In Figure P23.4, what is the current in the wire...Ch. 23 - Prob. 5P Ch. 23 - Prob. 6P Ch. 23 - a. What are the magnitude and direction of the...Ch. 23 - Prob. 8P Ch. 23 - The current in a circuit with only one battery is...Ch. 23 - What is the equivalent resistance of each group of...Ch. 23 - What is the equivalent resistance of each group of...Ch. 23 - Prob. 12P Ch. 23 - Prob. 13P Ch. 23 - You have a collection of 1.0 k resistors. How can...Ch. 23 - You have a collection of six 1.0 k resistors. What...Ch. 23 - You have six 1.0 k resistors. How can you connect...Ch. 23 - Prob. 17P Ch. 23 - Prob. 18P Ch. 23 - Prob. 19P Ch. 23 - Prob. 20P Ch. 23 - Prob. 21P Ch. 23 - Prob. 22P Ch. 23 - Prob. 23P Ch. 23 - Prob. 24P Ch. 23 - Prob. 25P Ch. 23 - Prob. 26P Ch. 23 - Prob. 27P Ch. 23 - Prob. 28P Ch. 23 - Prob. 29P Ch. 23 - Prob. 30P Ch. 23 - Prob. 31P Ch. 23 - Prob. 32P Ch. 23 - Prob. 33P Ch. 23 - Prob. 34P Ch. 23 - Prob. 35P Ch. 23 - A 6.0 F capacitor, a 10 F capacitor, and a 16 F...Ch. 23 - A 6.0 F capacitor, a 10 F capacitor, and a 16 F...Ch. 23 - You need a capacitance of 50 F, but you dont...Ch. 23 - You need a capacitance of 50 F, but you dont...Ch. 23 - Prob. 40P Ch. 23 - Prob. 41P Ch. 23 - Prob. 42P Ch. 23 - Prob. 43P Ch. 23 - Prob. 44P Ch. 23 - Prob. 45P Ch. 23 - Prob. 46P Ch. 23 - A 10F capacitor initially charged to 20C is...Ch. 23 - A capacitor charging circuit consists of a...Ch. 23 - Prob. 49P Ch. 23 - A 9.0-nm-thick cell membrane undergoes an action...Ch. 23 - A cell membrane has a resistance and a capacitance...Ch. 23 - Changing the thickness of the myelin sheath...Ch. 23 - A particular myelinated axon has nodes spaced 0.80...Ch. 23 - To measure signal propagation in a nerve in the...Ch. 23 - A myelinated axon conducts nerve impulses at a...Ch. 23 - Prob. 56GP Ch. 23 - Two 75 W (120 V) lightbulbs are wired in series,...Ch. 23 - Prob. 58GP Ch. 23 - A real battery is not just an emf. We can If model...Ch. 23 - Prob. 60GP Ch. 23 - Batteries are recharged by connecting them to a...Ch. 23 - Prob. 63GP Ch. 23 - Prob. 64GP Ch. 23 - Prob. 65GP Ch. 23 - Prob. 66GP Ch. 23 - What is the ratio P parallel/P series of the total...Ch. 23 - You have a device that needs a voltage reference...Ch. 23 - Prob. 69GP Ch. 23 - A circuit youre building needs an ammeter that...Ch. 23 - A circuit youre building needs a voltmeter that...Ch. 23 - For the circuit shown in Figure P23.68, find the...Ch. 23 - You have three 12 F capacitors. Draw diagrams...Ch. 23 - Initially, the switch in Figure P23.70 is in...Ch. 23 - Prob. 75GP Ch. 23 - Prob. 76GP Ch. 23 - Prob. 77GP Ch. 23 - Prob. 78GP Ch. 23 - Prob. 79GP Ch. 23 - Prob. 80GP Ch. 23 - Intermittent windshield wipers use a variable...Ch. 23 - Prob. 82GP Ch. 23 - In Example 23.14 we estimated the capacitance of...Ch. 23 - The giant axon of a squid is 0.5 mm in diameter,...Ch. 23 - A cell has a 7.0-nm-thick membrane with a total...Ch. 23 - The Defibrillator A defibrillator is designed to...Ch. 23 - The Defibrillator A defibrillator is designed to...Ch. 23 - The Defibrillator A defibrillator is designed to...Ch. 23 - A defibrillator is designed to pass a large...Ch. 23 - The voltage produced by a single nerve or muscle...Ch. 23 - The voltage produced by a single nerve or muscle...Ch. 23 - The voltage produced by a single nerve or muscle...Ch. 23 - The voltage produced by a single nerve or muscle...

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