Question

Помогите пожалуйста!

Answer 1

1) n=P*h/A=50*3/160=0.94  (94%)
2) n=P*h/(2*F*h)=600/(2*400)=0.75 (75%)
3) n=m*g*L1/(F*L2)=240*10*0.06/(550*0.3)=0.87  (87%)
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