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Unformatted text preview: Physics AP Test: Chapters 29 and 30 Form 1 q = F v B i = F L B 2 sin 4 o i dB ds r = o enc i B ds = net F ma = dv a dt = s r = U mgh = U qV = 2 1 2 K mv = 7 4 10 T m A - = ln 2 2 2 2 dx x x a x a = + + + ( 29 3 2 2 2 2 2 2 dx x a x a x a = + + ( 29 1 3 2 2 2 2 2 x dx x a x a- = + + Two wires are bent into 300 circular arcs, one of radius 50 cm and the other of radius 25 cm, as shown at right. The straight sections of the wire are oriented parallel to the radii of the arcs. The wire carries 2 A of current in the direction shown. 1) What is the magnetic field at the center of the circular arcs? 2) A 0.5-kg, 2.0-C charge passes through the center of the circular arcs moving at 1.0 x 10 6 m/s [N20W]. Do NOT ignore gravity. What is its acceleration? A coaxial cable consists of a cylindrical wire of radius 15 cm and a cylindrical shell of inner radius 20 cm and outer radius 30 cm. The cylinder carries a current of 4.0 A toward the north, and the shell carries a 6.0 A current toward the The cylinder carries a current of 4....
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- Spring '10