A long , rigid conductor , lying along x-axis carries a current of 5.0 A in the negative x direction . A magnetic B→=3.01iˆ+8.0x2jˆ, with x in metres and B→ in milliteslas. Find, in unit -vector notation , the force on the 2.0 , segment of the conductor that lies between x=1.0 m and x=3.0 m