A solenoid has a circular cross-section with a diameter of 2.5 cm, 85 turns and a length of 135 cm. It sits with its central axis in a vertica position, where the positive z direction is upward. An 15 A clockwise current flows through the solenoid. 1. What is the magnetic field inside the solenoid in vector form? 2. If this solenoid sits in a 35 mT magnetic field in the negative y direction. What is the torque (in terms of a vector) on the solenoid?

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