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lozanna [386]
3 years ago
8

The air sealed between two panes of glass in some windows helps to _____.

Physics
2 answers:
Crank3 years ago
4 0

Answer:

Insulate

Explanation:

Air is a good insulator.

Insulators are the materials which do not allow the heat to pass through them. Some examples of insulators are plastic, rubber, styrofoam, air, etc.

Air is trapped between the two layers of glass. Here air works as an insulator and do not allow to pass the hotness or coldness through them, die to which the temperature inside the plane remains constant.

olga_2 [115]3 years ago
3 0
<span>The air sealed between two panes of glass in some windows helps to </span><span>insulate and helps it to keep the warmth or coolness inside.

Hope that helps!
-Chris</span>
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3 years ago
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One mole of iron (6 x 10^23 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter, so the center-to-
choli [55]

Answer:

Explanation:

Given that:

length l = 2.3 m

a = 0.12 cm = 0.12  \times 10^{-2} \ m

x = 1.17 \ cm = 1.17 \times 10^{-2}\ m

m = 149 kg

\delta = 7.87 \ g/cm^3

da = 2.28 \times 10^{-10}\ m

F_{net} = F-mg\\ \\0 = F - mg \\ \\  F = mg \\ \\ k_sx = mg \\ \\

∴

k_s = \dfrac{149(9.8)}{1.17 \times 10^{-2}} \\ \\  k_s = 124803.42  \ N /m

N_{chain} = \dfrac{A_{wire}}{A_{atom}} = \dfrac{A_w}{da^2}

N_{chain} = \dfrac{(a)^2}{(da)^2} = (\dfrac{a}{da})^2

N_{chain} =  (\dfrac{0.12 \times 10^{-2} }{2.28 \times 10^{-10}})^2

N_{chain} = 2.77 \times 10^{13}

N_{bond} = \dfrac{L}{da} \\ \\  = \dfrac{2.3}{2.28 \times 10^{-10}} \\ \\ N_{bond} = 1.009 \times 10^{10}

\text{Finally; the stiffness of a single interatomic spring is:}

k_{si} =\dfrac{N_{bond}}{N_{chain}}\times k_s

k_{si} =\dfrac{(1.009 \times 10^{10})}{2.77*10^{13}}}\times (124803.42)

\mathbf{k_{si} =45.46 \ N/m}

4 0
2 years ago
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