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Quese 1 xxxx X xx ку. X B x xxx x x x x xxx A proton is accelerated from rest through a 20 kV potential difference and then m
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using conservation of energy Žmoza CLAV aq AV Des 2x1-6X10-1920x103 1.67X10-27 3) 1.95х 106 mis and we have relation Bav-me?

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