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The mass of an electron and its antiparticle,a positron,is 0.511 MeV/c2.In order to produce an electron-positron pair,a gamma ray must have an energy larger than 1.022 MeV because __________.
High-Fidelity
Refers to the reproduction of sound or images that is very faithful to the original, with minimal distortion and a high level of detail.
Assault
An intentional act that creates apprehension of imminent harmful or offensive contact in another person.
Lasting Damage
Enduring harm or injury that persists over a long period, potentially impacting an individual's health, well-being, or quality of life.
Racial Labels
Terms or classifications used to describe individuals based on perceived or actual racial characteristics.
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