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Materiale propedeutico

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A rectangular-shaped agricultural land has a side of 44 meters and another of 88 meters. How many hectares is its surface? Take into account the number of significant digits and remember that 1 ha = 10000 m2.

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The coefficient of sliding friction μ between a body and the surface on which it crawls is expressed as the ratio between two forces. What are its units of measurement in the International System? Remember that force is measured in newtons (N) and that

 \displaystyle 1\, \mathrm{N} = 1 \, \mathrm{\frac{kg, m}{s^2}}

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The transistors contained in computer integrated circuits today are 14 nanometers in size. How many centimeters does this size correspond to?

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What is the correct way to write the product result

 3.55 \times 24 \times 3450   ? 

Pay attention to the significant figures!

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Quale di queste grandezze NON è una grandezza fondamentale nel Sistema Internazionale?

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Una corrente di 10 pA (ossia 10 picoampere) a quanti ampere corrisponde?

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Il coefficiente di attrito radente μ tra un corpo e la superficie su cui striscia si esprime come rapporto tra due forze. Quali sono le sue unità di misura nel Sistema Internazionale? Si ricordi che la forza si misura in newton (N) e che

 \displaystyle 1 \, \mathrm{N} = 1 \, \mathrm{\frac{kg \, m}{s^2}}

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I transistor contenuti nei circuiti integrati dei computer, oggi, hanno dimensioni di 14 nanometri. A quanti centimetri corrisponde tale dimensione?

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How many cubic meters correspond to 3 cm3 ?

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Qual è il modo corretto di scrivere il risultato del prodotto 

 3.55 \times 24 \times 3450   ? 

Si ponga attenzione alle cifre significative!

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