One long wire carries current 22.0 A to the left along the x axis. A second long wire carries current 60.0 A to the right along the line (y = 0.280 m, z = 0). s the total magnetic field equal to zero? (a) Where in the plane of the two wires y = v m (b) A particle with a charge of -2.00 µC is moving with a velocity of 150î Mm/s along the line (y = 0.100 m, z = 0). Calculate the vector magnetic force acting on the particle. (Ignore relativistic effects.) F= (c) A uniform electric field is applied to allow this particle to pass through this region undeflected. Calculate the required vector electric field. E = N/C Need Help? Read It Master It

AS0.0-g metal ball having net charge Q = 5.50 µC is thrown out of a window horizontally north at a speed v = 22.0 m/s. The window is at a height h = 18.0 m above the ground. A uniform, horizontal magnetic field of magnitude B = 0.0100 T is perpendicular to the plane of the ball's trajectory and directed toward the west. (a) Assuming the ball follows the same trajectory as it would in the absence of the magnetic field, find the magnetic force acting on the ball just before it hits the ground. (Let the +x-direction be toward the north, the +y-direction be up and the +z-direction be east.) B. (b) Based on the result of part (a), is it justified for three-significant-digit precision to assume the trajectory is unaffected by the magnetic fleld? O Yes O No Explain.

An electron moves in a circular path with a speed of 1.49 x 10' m/s in the presence of a uniform magnetic field with a magnitude of 1.88 mT. The electron's path is perpendicular to the field. (a) What is the radius (in cm) of the circular path? cm (b) How long (in s) does it take the electron to complete one revolution? S

The magnetic field 38.0 cm away from a long, straight wire carrying current 3.00 A is 1580 nT. (a) At what distance is it 158 nT? cm (b) At one instant, the two conductors in a long household extension cord carry equal 3.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 38.0 cm away from the middle of the straight cord, in the plane of the two wires. nT (c) At what distance is it one-tenth as large? cm (d) The center wire in a coaxial cable carries current 3.00 A in one direction, and the sheath around it carries current 3.00 A in the opposite direction. What magnetic field does the cable create at points outside the cables? nT