3 years ago

Pls i need help with this question

Chemistry

1 answer:

zvonat [6]3 years ago

8 0

Answer:

option B is the correct level

Explanation:

PLEASE MARK ME AS A BRAINLIEST.

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Assume the alveolar radii are 0.05 and 0.07 mm towards the end of exhalation. Knowing that air flows from high to low pressures,

xeze [42]

Answer:

$0.286 mN/m^2$

Explanation:

Using Laplace's law of surface tension:

$P=\frac{2T}{r}$

where:

P = pressure

T = surface tension

r = radius

In the longer alveoli with radius of 0.07 mm = $0.07*10^{-2}m$ ; we have:

P = $\frac{2*25mN/m}{0.07*10^{-2}m}$

P = $0.714 mN/m^2$

In the smaller alveoli with radius 0.05 mm = $0.05 * 10^{-2} m$ ; we have:

P = $\frac{2*25mN/m}{0.05*10^-2m}$

P = $1.00 mN/m^2$

The pressure difference can now be calculate as follows:

Pressure difference = $(1.00 - 0.714)mN/m^2$

Pressure difference = $0.286 mN/m^2$

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3 years ago

Current is created by the movement of what subatomic particle?

Licemer1 [7]

Answer:

I believe the answer is electrons.

Explanation:

Protons can't move and neurons don't have a charge so it would be electrons.

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2 years ago

Particles in a plasma experience collisions than particles in a solid. Based on their state of matter alone, is it easier to spe

xxMikexx [17]

More, Moon, and lighter, you're welcome

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Maybe like a diamond or something

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What are differences and similarities between pure substances and mixtures

Snezhnost [94]

Answer:

HELLO THERE!

I HOPE MY ANSWER WILL HELP YOU :)

Explanation:

There is this picture that helped me. I hope it helps you too.

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4 years ago

Pls i need help with this question ​

Pls i need help with this question