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a_sh-v [17]
4 years ago
15

What is an exoplanet? Explain how scientists decide if an exoplanet might be like Earth Then,

Chemistry
1 answer:
netineya [11]4 years ago
6 0

Answer: All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets. environment.

Explanation:

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The answer is 14.22 mg / (mm^2)
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Which of the following are properties of the oxides of non-
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what is the difference between the number of electrons in an atom of selenium and the number of electrons in an atom of aluminum
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Which term identifies a type of organic reaction?
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4 years ago
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How fast is an electron travelling If it has a wavelength of 8.20 km?
Lemur [1.5K]

The electron is travelling with a velocity of 1.123 × 10⁷m/s if it has a wavelength of 8.20 km.

<h3>How to calculate velocity of an electron?</h3>

The velocity at which an electron travels can be calculated using the following formula:

λ = h/mv

Where;

  • H = Planck's constant
  • m = mass of electron
  • v = velocity of electron
  • λ = wavelength

  • Planck's constant (h) = 6.626 × 10−³⁴ J⋅s.
  • mass of electron (m) = 9.109 × 10−³¹ kg
  • wavelength = 8200m

8200 = 6.626×10−³⁴ / 9.109 × 10−³¹V

8200 = 7.3 × 10-⁴V

V = 8200 ÷ 7.3 × 10-⁴

V = 1.123 × 10⁷m/s

Therefore, the electron is travelling with a velocity of 1.123 × 10⁷m/s if it has a wavelength of 8.20 km.

Learn more about velocity at: brainly.com/question/13171879

#SPJ1

5 0
2 years ago
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