Biot-Savart Law and Force on Particle in Magnetic Field

Figure (21) Figure (b) A ring of radius R, located in the :s'yplane and centered about the zaxis, carries a current I directed clockwise as seen from above. (Figure (a)}. (Part a) Determine the direction and magnitude of the magnetic field at a point Pthat lies on the positive zaxis a distance 2 from the origin. Express your answer in terms of R, mu_0 for #9, z. I, and unit vectors hati for i, hatj for}, and hatk for It as needed. 17309) = Biot-Savart Law and Force on Particle in Magnetic Field 0 points possible (ungraded} (Part b} At the instant depicted in Figure (b). a pointlike positively charged particle with mass m and charge if > O is located at the point P and moving with velocity given by = u i. where u > 0. At that instant, determine a vector expression for the acceleration of the charged particle. You may neglect any effect that the charged particle has on the current ring. Express your answer in terms of R, mu_0 for #9, z. I, if, an, t), and unit vectors hati for i, hatj for :i, and hatk for E as needed