Para concluir o seu trabalho, Ricardo utilizou uma lente com raio de curvatura de 100 cm para visualizar uma peça, qual a distancia da peça até a lente para se ter um aumento de 5 vezes? 1/f = 1/p + 1/p´

R = 2.f

A = y´/y = -p´/p = f/f-p

a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be? a long strand of spaghetti is folded once. if this is cut 20 times, how many pieces of spaghetti will there be?

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the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

the force on the thing and the distance the force moves the thing

i think the answer is a, hope this : )