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True [87]
2 years ago
14

Which of the following statements is correct A. College degree isn't as important as it was in the past b. Over time, I can earn

more money by not going to college c. College graduates earn about double the income of high school graduates d. The money I make after college does not compensate for the four years I spent in college
Physics
1 answer:
julia-pushkina [17]2 years ago
3 0

Answer:

I'd say C is the answer they want, though my pedantic side wants to argue for B being true as well.

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A uranium ion and an iron ion are separated by a distance of =61.10 nm. The uranium atom is singly ionized; the iron atom is dou
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Answer:

Explanation:

Charge on uranium ion = charge of a single electron

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charge on doubly ionised iron atom = charge of 2 electron

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Let the required distance from uranium ion be d .

force on electron at distance d from uranium ion

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force on electron at distance 61.10 x 10⁻⁹ - r from iron  ion

= 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

For equilibrium ,

9 x 10⁹ x 1.6 x 10⁻¹⁹ / r² = 9 x 10⁹ x 3.2 x 10⁻¹⁹ / (61.10 x 10⁻⁹ - r )²

2 d² = (61.10 x 10⁻⁹ - r )²

1.414 r = 61.10 x 10⁻⁹ - r

2.414 r = 61.10 x 10⁻⁹

r = 25.31 nm .

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