Minutnaya strelka chasov za odin chas sovershaet polniy oborot. chemu rovno lineynaya skorost kontsa strelki dlinnoy 5 cm 2)kakovi radiusi krivizni poverkhnost sobiraushey linzi s opticheskoy siloy 5dptr 3) kakoe kolichestvo electrichestva prokhodit cherez poperechnoe secheniye provodnika soprotivleniem 1kom v techeniye 10s esli na konchakh provodnika podano napryajenie 200v
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Ответы на вопрос:
1) chtobi naiti lineynuu skorost' nado umnozit uglovuu na dlinu strelki. uglovaya ravna 2π/3600, znacit lineynaya = 2π/3600*0.05 = 87.2 mkm/sec 2) po formule dla dvoakovipukloy linzi metra 3) po zakonu oma i = u/r = 200/1000 = 1/5 a zarad raven i*t = 1/5*10 = 2 kulona
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