10. A positive helium ion He+ is released from rest from the surface of a +1000 V electrode. It crosses (in vacuum) the gap between the electrodes, passes through a small hole in a 0 V electrode and into a wide magnetic field, then begins to curve as shown. The magnetic field is uniform in the region to the right of the 0 V electrode and is zero to the left of the 0 V electrode. (a) What is the direction of the magnetic field? Explain your reasoning, then show the field on the diagram. (b) The magnetic field strength is 1.0 T. Does the ion collide with the 0 V electrode? Magnetic field He 1000 V OV 2.0 сm

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!