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3 years ago

14

8) What kind of circulation carries blood to all organs and systems?

2 answers:

vivado [14]3 years ago

8 0

The heart pumps the blood

Roman55 [17]3 years ago

5 0

There isn’t one blood circulatory system in the human, but two, which are in fact connected. The systemic circulation provides organs, tissues and cells with blood so they get oxygen and other vital substances. The pulmonary circulation is where the fresh oxygen we breath in enters the blood.

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sergejj [24]

Based on particle size.
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3 years ago

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Neko [114]

Answer:

Explanation:

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2 years ago

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2 years ago

17 copper wires of length l and diameter d are connected in parallel to form a single composite conductor of resistance R. What

Lubov Fominskaja [6]

Answer:

$\frac{D}{d} = 4.12$

Explanation:

As we know that resistance of one copper wire is given as

$r = \rho \frac{L}{a}$

here we know that

$a = \pi (\frac{d}{2})^2$

now we have

$r = \rho \frac{L}{\pi (\frac{d^2}{4})}$

$r = \rho \frac{4L}{\pi d^2}$

now we know that such 17 resistors are connected in parallel so we have

$R = \frac{r}{17}$

$R = \rho \frac{4L}{17 \pi d^2}$

Now if a single copper wire has same resistance then its diameter is D and it is given as

$R = \rho \frac{4L}{\pi D^2}$

now from above two equations we have

$\rho \frac{4L}{\pi D^2} = \rho \frac{4L}{17 \pi d^2}$

$D^2 = 17 d^2$

now we have

$\frac{D}{d} = 4.12$

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3 years ago

In a bumper car arena, two cars of equal mass are heading straight toward each other. The orange one is traveling at a speed of

marshall27 [118]

Answer: D.

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hope this helps! ✌

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3 years ago