A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.14 m. The normal to the plane of the loop is parallel to a constant magnetic field (p = 0") of magnitude 0.81 T. What is the change A❤ in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution? (into paper) ΑΦΕ

A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.14 m. The normal to the plane of the loop is parallel to a constant magnetic field (p = 0") of magnitude 0.81 T. What is the change A❤ in the magnetic flux that passes through the loop when, starting with the position shown in the drawing, the semicircle is rotated through half a revolution? (into paper) ΑΦΕ