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r-ruslan [8.4K]
3 years ago
15

Which is a device that stores electric charge by separating positive and negative charges?

Physics
2 answers:
mafiozo [28]3 years ago
5 0
Pretty sure its a capacitor
inn [45]3 years ago
4 0

Answer:

The last one, a capacitor

Explanation:

Right on edge.

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A pump uses a piston of 15 cm diameter that moves at 2.0 cm/s as it pushes a fluid through a pipe. what is the speed of the flui
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The important point here is that volumetric flow rate in the pump and the pipe is the same.

Q = AV, where Q = Volumetric flow  rate, A = Cross sectional area, V = velocity

Q (pump) = (π*15^2)/4*2 = 353.43 cm^3/s
Q (pipe) = (π*(3/10)^2)/4*V = 0.071V

Q (pump) = Q (pipe)
0.071V = 353.43 => V = 5000 cm/s

Therefore, the flow  of water in the pipe is 5000 cm/s.
4 0
3 years ago
How many atoms of oxygen are there in one molecule of trinitrotoluene, if the chemical formula is C6H3(NO2)3?
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。☆✼★ ━━━━━━━━━━━━━━  ☾  

2 x 3 = 6

Thus there are 6 atoms of oxygen in this molecule.

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6 0
3 years ago
Read 2 more answers
The lower the frequency the _____ the pitch sound.
stepan [7]
The lower the frequency the lower the pitch sound.
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B. If we drop a ball from the roof, its falls<br>downward​
frosja888 [35]

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yes ,what's the question

and if the question is why

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An 8.0 cm object is 40.0 cm from a concave mirror that has a focal length of 10.0 cm. Its image is 16.0 cm in front of the mirro
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 We can rearrange the mirror equation before plugging our values in. 
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1/p = 4/40cm - 1/40cm = 3/40cm
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13.33cm = p

Now that we have the value of p, we can plug it into the magnification equation.

M=-16/13.33=1.2
1.2=h'/8cm
9.6=h'

So the height of the image produced by the mirror is 9.6cm.
6 0
3 years ago
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