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Taya2010 [7]
3 years ago
12

In a tug of war, when one team is pulling with a force of 85 N and the other 40 N, what is the net

Physics
1 answer:
olya-2409 [2.1K]3 years ago
4 0
85 N - 40 N = 45 N
And depending on direction the greater force is being pulled towards
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Explanation:

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As a projectile falls, what happens to the components of velocity?
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Answer:

Option (c).

Explanation:

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An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99 amu, 0.26% abundance with 20.99
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<u>Answer:</u> The average atomic mass of the given element is 20.169 amu.

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of the isotopes each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i     .....(1)

We are given:

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Percentage abundance of isotope 1 = 90.92 %

Fractional abundance of isotope 1 = 0.9092

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Mass of isotope 2 = 20.99 amu

Percentage abundance of isotope 2 = 0.26%

Fractional abundance of isotope 2 = 0.0026

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Mass of isotope 3 = 21.99 amu

Percentage abundance of isotope 3 = 8.82%

Fractional abundance of isotope 3 = 0.0882  

Putting values in equation 1, we get:

\text{Average atomic mass}=[(19.99\times 0.9092)+(20.99\times 0.0026)+(21.99\times 0.0882)]

\text{Average atomic mass}=20.169amu

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