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frozen [14]
3 years ago
6

HELP ME PLSS!! Will mark brainiest

Physics
2 answers:
VikaD [51]3 years ago
5 0

1.skull

2. bone marrow

3. homeostasis

nataly862011 [7]3 years ago
3 0

Answer:

1.Skull

2.Bone marrow

3.Homeostasis

Explanation:

:)

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Why don’t metals break when hit with hammer
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17 copper wires of length l and diameter d are connected in parallel to form a single composite conductor of resistance R. What
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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

3 0
3 years ago
A moving fan continues to move for a while even after switched off, why? ​
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Answer:

due to the inertia of motion, the fan continues to move for some time even after switching it off.

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The power of a machine is 6000 W. This machine is scheduled for design improvements. Engineers have reduced the
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Explanation:

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