alyssagrana030807
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The width of a human hair is about 1* 10^-4 meter wide.
The width of mechanical pencil lead is about 7 * 10^-4
meter wide.
About how many pieces of hair would it take to match the width of a piece of
mechanical pencil lead?

Respuesta :

Answer: The answer is 7.

Step-by-step explanation:

1*10^-4 equals 0.001 and 7*10^-4 equals 0.007 so 0.007 divided by 0.001 is 7. I hope this makes sense !

onyebuchinnaji

The number of pieces of human hair that is required to match the width of mechanical pencil lead is 7.

The given parameters;

  • width of a human hair, w = [tex]1\times 10^{-4} \ meter \ wide[/tex]
  • width of mechanical pencil lead =  [tex]7\times 10^{-4} \ meter \ wide[/tex]

The number of pieces of human hair that is required to match the width of mechanical pencil lead is calculated by dividing the width of the mechanical pencil lead by width of the human hair as shown below.

[tex]= \frac{7\times 10^{-4} \ m}{1\times 10^{-4} \ m} \\\\= 7[/tex]

Thus, the number of pieces of human hair that is required to match the width of mechanical pencil lead is 7.

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