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# Figure 30-73a shows two concentric circular regions in

## Problem 84 Chapter 30

Fundamentals of Physics | 10th Edition

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Problem 84

Figure 30-73a shows two concentric circular regions in which uniform magnetic fields can change. Region 1, with radius r1 ! 1.0 cm, has an outward magnetic field that is increasing in magnitude. Region 2, with radius r2 2.0 cm, has an outward magnetic field that may also be changing. Imagine that a conducting ring of radius R is centered on the two regions and then the emf # around the ring is determined. Figure 30-73b gives emf # as a function of the square R2 of the rings radius, to the outer edge of region 2. The vertical axis scale is set by #s ! 20.0 nV. What are the rates (a) dB1/dt and (b) dB2/dt? (c) Is the magnitude of increasing, decreasing, or remaining constant?

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Les Régions de la France Prof. Capellari These are notes on the Regions of France covered in Professor Capellari’s French 2006 Language and Culture II course. La Normandie Les pirates scandinaves, ont adopté la langue français 2eme guerre mondiale Grandes villes de agricole et industrie -- Caen, le Havre Cathédrales Universitées qui sont créés dans le...

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