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pickupchik [31]
4 years ago
12

How can the difference in the brightness of spectral lines be explained?

Physics
1 answer:
Ksenya-84 [330]4 years ago
5 0
<span>more lines = a lot of electrons returning back to ground state from same level</span>
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An electron in a mercury atom changes from energy level b to a higher energy level when the
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The energy is 3.06 electronvolts,  E = 3.06eV

1eV = 1.6 * 10^-19 J

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4 0
3 years ago
An asteroid of mass 5.7×104 kg carrying a negative charge of 14.0 μC is 190 m from a second asteroid of mass 5.5×104 kg carrying
Finger [1]

Answer:

repulsion force es  R = 5,224 10⁻³ N

Explanation:

We use Newton's second law to add forces, the elective force is repulsive because the asteroids have the same type of charge and gravitational force is always attractive.

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      Fg = G m1 m2 / r²

      Fg = 6,673 10⁻¹¹ 5.7 10⁴ 5.5 10⁴/190²

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Electric force

     Fe = k q1 q2 / r²

     Fe = 8.99 10⁹ 14.0 10⁻⁶ 15.0 10⁻⁶ / 190²

     Fe = 5.2296 10⁻³ N

The resulting force is

     R = Fe - Fg

     R = 5.2296 10⁻³ - 5.795 10⁻⁶=  5229.6 10⁻⁶ - 5,795 10⁻⁶

     R = 5,224 10⁻³ N

this is a repulsive force and the asteroids move away from each other

7 0
3 years ago
The measure of how quickly an object’s velocity changes is called
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Acceleration I’m pretty sure
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4 years ago
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Fluorine-18 undergoes beta-plus decay. The child isotope has an atomic mass of
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18

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got it right on edge

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