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The rear window defogger of a car consists of thirteen

Studyguide for Physics | ISBN: 9781118486894  | Authors: John D. Cutnell ISBN: 9781118486894 195

Solution for problem 61 Chapter 20

Studyguide for Physics

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Studyguide for Physics | ISBN: 9781118486894  | Authors: John D. Cutnell

Studyguide for Physics

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Problem 61

The rear window defogger of a car consists of thirteen thin wires (resistivity 5 88.0 3 1028 V?m) embedded in the glass. The wires are connected in parallel to the 12.0-V battery, and each has a length of 1.30 m. The defogger can melt 2.10 3 1022 kg of ice at 0 8C into water at 0 8C in two minutes. Assume that all the power delivered to the wires is used immediately to melt the ice. Find the cross-sectional area of each wire.

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Trajectories ­ Flight paths through space ­ Conic Sections ­ Figure 8 (free return trajectories) ­ Spiral (Electric propulsion ­ solar sails) Sub­orbital trajectory ­ Reach space, without completing a full orbit ­ Example: For V2 with horizontal distance of 330 km, Δv = 1.6 km ≈ 3,580mph s Orbital Trajectories ­ Kepler and Newton ­ v = 2πr P ­ v = GM √ r ­ GM = 4π 22 r2 4π2 3 ­ P = GM r ­ Kepler’s 3rd law Video: https://www.youtube.com/watchv=Am7EwmxBAW8 ­ Planet is one of foci of the orbit ­ Fastest

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Chapter 20, Problem 61 is Solved
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Textbook: Studyguide for Physics
Edition:
Author: John D. Cutnell
ISBN: 9781118486894

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The rear window defogger of a car consists of thirteen