5. (4 points) A very long wire carries a current I = 2.30 A and is bent into the shape seen below: one part is exactly half a circle with radius R = 4.60 cm, and the rest is straight. At some point above and below the figure the wire loops around (the dashed lines; you can ignore this part of the wire since it's very far away), and the two sections of wire are separated by a distance d = 3.30 cm. At a particular time, a proton happens to be at the dot (at the centre of the half-circle) and is moving with velocity v = 120 m/s to the right. What is the acceleration (magnitude and direction) of the proton at this instant? you're trying to find. I= 230 A, R= 4.60cm, d= 3.30cm 9p= 160 *0-NC, Mp: 167 x10-2# k, V= 120 m/S Are and opposite wie contribute to magnetic field R H B, = MOI 4 R By right hand rake ( atx 8 ) F is down words B, = MOI zad F = qv xB = gevB Sino