A positron has the charge and mass of an electron except that the charge is positive. A positron that is initially at rest at a distance of 2.0 nm away from a stationary carbon nucleus is then allowed to move freely. What will be the speed of the positron when it is infinitely far away from the carbon nucleus? Since the carbon nucleus is much more massive than the positron, it remains at rest. The mass and charge of a positron are m = 9.11 x 10-31 kg and e = 1.602 x 10-19 C, respectively, while the charge of a carbon nucleus is 6e.   a. 3.0 x 106 m/s  b. 2.4 x 106 m/s  c. 1.8 x 106 m/s  d. 3.6 x 106 m/s  e. 1.2 x 106 m/s

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.