Ответ:
3) В 4) Б
Объяснение:
3) 3m*1=m*L -----> L=3
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4) КПД=m*g*h/(F*L)=1.5*10*0.3/(4*1.8)=0.625 (62.5%)
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Ответ:
3) В 4) Б
Объяснение:
3) 3m*1=m*L -----> L=3
===
4) КПД=m*g*h/(F*L)=1.5*10*0.3/(4*1.8)=0.625 (62.5%)
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