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Prosím pomôcť synovi z úlohami z matematiky, ďakujem.
Elektrón vletí do homogénneho magnetického poľa o indukcii B=0,0005 T a rýchlosti v=20000km/s kolmo na vektor indukcie. Aká sila pôsobí na elektrón v magnetickom poli? (e=1,602 x10-19 C )
Kondenzátor a vienka sú zapojené sériovo. Rezonancna frekvencia tohto zapojenia je 1,00MHz, použitý kondenzátor má kapacitu 100pF. Aká musí byt indukčnosť cievky?
Elektrická práca vykonaná pri premiestneni jednotkového elektrického náboja z blízkosti iného elektrického náboja do nekonečna, kde je hladina potenciálu nulová, sa číselne rovná? ... správna odpoved…
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