15. The wires shown are infinitely long and carry currents I. Find the magnetic fields at point P, which is at a distance a from the turning point. (A) (B) (C)(D) (E)

5. Two blocks are at rest on a frictionless, level table. Both blocks have the same mass m, connected by a spring of negligible mass. The separation distance when the spring is relaxed is L. During a time interval Δt, a constant force F is applied horizontally to the left block, moving it through a distance x₁. The right block moves through a distance x₂. When the force F is removed, what is the total energy of the system associated with vibration relative to its center of mass? (A) (B) (C) (D)(E) It cannot be determined

15. The wires shown are infinitely long and carry currents I. Find the magnetic fields at point P, which is at a distance a from the turning point.

(A)
(B)
(C)
(D)
(E)

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