[2] A wire loop carrying a current I= 1.5 4 is bent into the shape of a semicircle of radius R= 0.5 m. A uniform magnetic field B= 3.51 is applied in the plane of the loop and perpendicular to the straight edge. I (a) Find the magnetic force (magnitude and direction) on the curved portion of the wire by integration. (Find general solution first and then plug in the numbers in the end). (10 points) (b) Find the magnetic force (magnitude and direction) on the bottom straight portion of the wire by integration. (Find general solution first and then plug in the numbers in the end). (10 points)