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3 years ago

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When we touch things, how close do atoms get together? Or does anything touch anything else?? Full answer Please 50 - 100 words

2 answers:

Brut [27]3 years ago

8 0

Basically, we don't touch anything. We are always about an atom above the ground. The atoms in our body are very far apart. For example, if you made every atom in every human body touch then the whole earth's population could fit on a sugar cube. This is called the Pym law. The only reason I can't put my hand through the computer right now is since there is always one layer of electrons outlining our body. So the electrons stop us from falling into the center of the earth.

kkurt [141]3 years ago

3 0

Well, im pretty sure that when we do touch eachother, the atoms themselves are touching. idk if this is what ur looking for but hope this helps.

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Eddi Din [679]

Answer:

Explanation:

First of all, I used the specific heat of water as 4182 J/(kgC) and the specific heat of ethyl alcohol (EtOH) as 2440 J/(kgC); that means that we need the masses in kg, not g.

120.g = .1200 kg of ethyl alcohol. Now for the formula:

$t_f=\frac{(m_{H2O}*spheat_{H2O}*temp_{H2O})+(m_{EtOH}*spheat_{EtOH}*temp_{EtOH})}{(m_{H2O}*spheat_{H2O})+(m_{EtOH}*spheat_{EtOH})}$ where spheat is specific heat.

Filling that horrifying-looking formula in with some values:

$16.0=\frac{(x*4182*20.0)+(.1200*2440*10.0)}{(x*4182)+(.1200*2440)}$ and

$16.0=\frac{83640x+2928}{4182x+292.8}$ and

16(4182x + 292.8) = 83640x + 2928 and

66912x + 4684.8 = 83640x + 2928 and

1756.8 = 16728x so

x = .105 kg and the amount of water added is 105 g

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3 years ago

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Marina86 [1]

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geniusboy [140]

Answer:

C

Explanation:

Because this same question was on my test last week and I got it correct

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elixir [45]

Explanation:

Given data

Pressure P=1200 kPa

To find

Pressure in

(a) kN/m²

(b) kg/m.s²

(c) kg/km.s²

Solution

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$P=(1200kPa)(\frac{1kN/m^{2} }{1kPa} )\\P=1200kN/m^{2}$

For Part (b)

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For Part (c)

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