Two 1.9 cm-diameter disks face each other, 1.3 mm apart. They are charged to   ±± 16 nC.   1. What is the electric field strength between the disks?Express your answer to two significant figures and include the appropriate units. 2. A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk? Express your answer to two significant figures and include the appropriate units.

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Magnetic Moment

The magnetic moment is defined as the alignment of a magnet and its strength when the magnet is creating a magnetic field. There are number of examples of the magnetic moment, few are a current carrying conductor in the form of coil, elements at microscopic levels like electrons and many more.