1. A proton moves with an unknown velocity through a magnetic field of 6.79 x 10#T that points directly south. The proton experiences a force of 3.45 x 10- N directly east. What is the magnitude of the velocity? (charge of a proton is +1.6 x 10- c) 1.23 x 10 m/s 3.18 x 10' m/s 1.23 x 10 m/'s 3.18 x 10 m/sT. You heat up a piece of metal and bring it close to a strong magnet. You let the piece of metal cool while in place. What happens? 0 After the induced magnet is moved away.r from the strong magnet, it will return to its non-magnetic form. 0 The induced magnet will stay.r a magnet after it cools. 0 Nothing happens in this case] because there was no contact between the metal and strong magnet. O The magnetic ability of the original strong magnet will be reduced by the presence of the nonmagnetic material. 11. You bring the north pole of one magnet close to the south pole of another magnet. Which of the following is/are true? Check all that apply. There is an attractive force between the north pole of the one and the south pole of the other. There is a repulsive force between the north pole of the one and the south pole of the other. The field lines move from the south pole of the one to toward the north pole of the other magnet. The field lines move from the north pole of the one to toward the south pole of the other magnet.16. Which of the following statements are true? Check all that apply. When particles pass through a double slit, it acts like a particle. When light passes through a double slit, it acts like a wave. When light passes through a double slit, it acts like particles. When particles pass through a double slit, it acts like waves.18. A current-carrying wire carries a current of 0.895 A. How far away from the wire is point P if the magnetic field at that location is 5.34 x 10-6 T? 0.559 A 0.0559 A O 0.335 A 0.0335 A19. Which of the following electromagnets will have the weaker force assuming the number of coils around the core is the same? O a wire with a 0.50 A current a wire with a 1.00 A current O a wire with a 1.50 A current O a wire with a 2.00 A current