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3 years ago

State Newton’s law of universal gravitation in words. Then do the same with one equation

1 answer:

4 0

-- "The gravitational force between two masses acts along the line joining their centers of action. The force is proportional to the product of the two masses, and inversely proportional to the square of the distance between their centers of action."

-- "one equation"

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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

$\delta = 7.87 \ g/cm^3$

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

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

∴

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

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

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

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

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

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

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

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

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

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

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2 years ago

What causes an atom to be neutral?

Ugo [173]

Answer:

Explanation:

If there are the same number of protons (+) as electrons (-) they will cancel out and make the atom neutral.

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2 years ago

What is the Creation Mandate?

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Is the divine injunction found in Genesis 1:28, in which God, after having created the world and all in it, ascribes to humankind the tasks of filling, subduing, and ruling over the earth.

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3 years ago

Your friend wants your advice about his new transformation fitness plan. He has found a plan that sounds promising to him, but h

cestrela7 [59]

What is the question? I think that you answered it yourself...

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3 years ago

What happens to the velocity of a sound wave in air if the temperature of the air increases?

Yuki888 [10]

The answer is D :) hope this helps

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2 years ago

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