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Box of Cheerios� In Fig 6-55, a box of Cheerios� and a box of Wheaties� are accelerated across a horizontal surface by a horizontal force applied to the Cheerios� box. The magnitude of the frictional force on the Cheerios� box is 2.1 N, and the magnitude of the frictional force on the Wheaties� box is 5.3 N. If the magnitude of is 12 N, what is the magnitude of the force on the Wheaties� box from the Cheerios� box?