Modified Mastering Physics with Pearson eText -- Combo Access -- for Physics for Scientist and Engineers (18 week)
5th Edition
ISBN: 9780137504299
Author: Douglas C. Giancoli
Publisher: Pearson Education (US)
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Textbook Question
Chapter 28, Problem 37P
(II) A wire, in a plane, has the shape shown in Fig. 28–43, two arcs of a circle connected by radial lengths of wire. Determine
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II) For the transmission of electric power from power plantto home, as depicted in Fig. 21–25, where the electric powersent by the plant is 100 kW, about how far away could thehouse be from the power plant before power loss is 50%?Assume the wires have a resistance per unit length of 5 x10-5Ω /m
II) A 4.80-m length of 2.0-mm-diameter wire carries a750-mA dc current when 22.0 mV is applied to its ends. If thedrift velocity is 1.7X 10-5 m/s determine (a) the resistance Rof the wire, (b) the resistivity p and (c) the number n offree electrons per unit volume.
(III) A 10.0-m length of wire consists of 5.0 m of copperfollowed by 5.0 m of aluminum, both of diameter 1.4 mm.A voltage difference of 95 mV is placed across the compositewire. (a) What is the total resistance (sum) of the two wires?(b) What is the current through the wire? (c) What are thevoltages across the aluminum part and across the copper part?
Chapter 28 Solutions
Modified Mastering Physics with Pearson eText -- Combo Access -- for Physics for Scientist and Engineers (18 week)
Ch. 28 - The magnetic field due to current in wires in your...Ch. 28 - Compare and contrast the magnetic field due to a...Ch. 28 - Two insulated long wires carrying equal currents I...Ch. 28 - Prob. 4QCh. 28 - (a) Write Ampres law for a path that surrounds...Ch. 28 - Use the Biot-Savart law to show that the field of...Ch. 28 - Prob. 9QCh. 28 - Why does twisting the lead-in wires to electrical...Ch. 28 - Compare the Biot-Savart law with Coulombs law....Ch. 28 - Will a magnet attract any metallic object, such as...
Ch. 28 - An unmagnetized nail will not attract an...Ch. 28 - Prob. 18QCh. 28 - Prob. 5PCh. 28 - (II) A third wire is placed in the plane of the...Ch. 28 - Prob. 18PCh. 28 - (II) Let two long parallel wires, a distance d...Ch. 28 - (II) Repeat Problem 19 if the wire at x = 0...Ch. 28 - Prob. 36PCh. 28 - (II) A wire, in a plane, has the shape shown in...Ch. 28 - (II) A circular conducting ring of radius R is...Ch. 28 - Prob. 40PCh. 28 - Prob. 56GPCh. 28 - A rectangular loop of wire carries a 2.0-A current...Ch. 28 - Prob. 60GPCh. 28 - A 175-g model airplane charged to 18.0 mC and...
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