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3 years ago

9

Fish are able to acquire the oxygen needed for respiration under water using gills. This is an example of which type of adaptati

on?

1 answer:

stiks02 [169]3 years ago

3 0

Answer:

Structural

Explanation:

Structural adaptations are a change to a organism's body, gills are part of the fish's body which would be why this is a structural adaptation!

Hope this helped! Stay safe have a good day or night!

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What length of a certain metal wire of diameter 0.15 mm is needed for the wire to have a resistance of 15 ω? the resistivity of

Murljashka [212]

The resistance of the cylindrical wire is $R=\frac{\rho l}{A}$ .

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$A=\frac{\rho l}{R}\\ \frac{\pi d^2}{4}=\frac{\rho l}{R}\\ l=\frac{\pi d^2 R}{4 \rho}$

Here $d=0.15, R=15, \rho=1.68(10^{-8})$ .

Substituting numerical values,

$l=\frac{\pi 0.15^2(10^{-6}) (15)}{4 (1.68)(10^{-8})} \\ l=15.78$

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4 years ago

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Fittoniya [83]

Answer:

He should stand from the center of laser pointed on the wall at 1.3 m.

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Given that,

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$d\sin\theta=n\lambda$

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3 years ago

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Here we know that

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DENIUS [597]

Answer:

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