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A wire segment 1.2 m long carries a current I = 3.5 A and is oriented as shown in the figure. A uniform magnetic field of magnitude 0.50 T pointing toward the -x direction is present as shown. The +z-axis points directly into the page. What is the magnetic force vector on the wire segment?

A wire segment 12 m long carries a current I 35 A and is oriented as shown in the figure A uniform magnetic field of magnitude 050 T pointing toward the x direc class=

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Answer:

-1.61 k (N)

Explanation:

L = 1.2 m, I  = 3.5 A, B = 0.50 T, α = 40°

F = I L x B (cross product)

F = I L(sinα i - cosα j) x B (-i)

= -IBLcosα k

= -3.5 * 0.50 * 1.2 * cos40 k

= -1.61 k (N)

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