In the figure below, both currents in the infinitely long wires are 7.65 A in the negative x direction. The wires are separated by the distance 2a = 4.30 cm.

(a) Sketch the magnetic field pattern in the yz plane.

(b) What is the value of the magnetic field at the origin? (Assume B is in teslas and z is in meters. Use the following variable as necessary: z.)

(c) What is the value of the magnetic field at the (y = 0, z ? ?)? (Assume B is in teslas and z is in meters. Use the following variable as necessary: z.)

(d) Find the magnetic field at points along the positive z axis as a function of z. (Assume B is in teslas and zis in meters. Use the following variable as necessary: z.)

* Z a