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20_InstSolManual_PDF_Part4

# 20_InstSolManual_PDF_Part4 - is either parallel or...

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Figure 20.8 (b) The directions of and are shown in Figure 20.8b. The right-hand rule direction and the direction of are also shown in Figure 20.8b; is 140° counterclockwise from the axis, so is 50° counterclockwise from the axis. 20.9. Set Up: and at each lettered point are shown in Figure 20.9a–e. The direction of the magnetic force at each point is given by the right-hand rule. Figure 20.9 Solve: Point a: is in the direction. Point b: is in the direction. Point c: and Point d: and is in the direc- tion. Point e: and is in the yz plane, midway between the and axes. Reflect: The force is largest when is perpendicular to and the force is zero when
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Unformatted text preview: is either parallel or anti-parallel to B S . v S B S v S 2 z 2 y F S F 5 q v B . f 5 90° 2 y F S F 5 q v B sin 45° 5 q v B / " 2 . f 5 45° F 5 0. f 5 180° 1 y F S F 5 q v B . 2 z F S F 5 q v B sin f 5 q v B sin90° 5 q v B . y x v S z B S F S y x v S z B S F S y x v S z F S B S y v S 45.0 ° z B S F S x y x z B S v S ( a ) ( b ) ( c ) ( d ) ( e ) B S v S 1 y 1 x F S F S F 5 q v B sin f 5 1 2.50 3 10 2 8 C 21 40.0 3 10 3 m / s 21 2.00 T 2 sin 90° 5 2.00 3 10 2 3 N. f 5 90°. B S v S ( b ) y z x 50 ° 140 ° v S F S B S y z x 50 ° v S B S f ( a ) 20-4 Chapter 20...
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