Question

The wool of a vicuna is finer than any other wool. The hair of this animal can be as thin as 0.000006 meters. If the average thickness of human hair is approximately 8.4 × 10-5 meters, what is the difference of the thickness of a human hair and a vicuna hair?

A.2.4 × 10-5 meters



B.2.4 × 10-6 meters



C.7.8 × 10-6 meters



D.7.8 × 10-5 meters

Answer 1

D is the correct answer

Explanation:

have a great day!!!!!!!!

Answer 2

Answer:
`7.8 * 10^(-5) \text{ meters}`

Explanation:

The length of a vicuna hair = 0.000006 =
`0.6 * 10^(-5)`

And, the length of the a human hair =
`8.4* 10^(-5)`

Thus, the difference between the human hair and vicuna hair

`= 8.4* 10^(-5)-0.6* 10^(-5)`

`=10^(-5)(8.4-0.6)`

`=10^(-5)(7.8)`

`=7.8* 10^(-5)`

⇒ Option D is correct.