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the diamensions of the rectangular in meters are 5.4 cm = 0.054 meters and 5.9 cm = 0.059 meters
The area of the rectangular in square meters will be S = 0.054 * 0.059 = 0.003186 m^2 = 318,6 * 10^(-5) m^2
the magnetic flux is given and its Φ = 4.9 * 10^(-5) T m^2
the formula for the magnetic flux is : Φ = Β *S*cosθ where θ is the angle to the normal of the rectangular .
Since we want the strength of the magnetic field we solve for B . Thus : B = Φ / (S*cosθ)
and substitute : Β = 4.9 * 10^(-5) / (318.6 * 10^(-5) *cos44 ) = 4.9 / (318.6 *0.719) = 4.9 / 229.07 =0.02139 T = 21.39 mT
Be aware that the answer is needed in mT so use 21.39 mT
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