Helix Nebula is a cloud of gases and dust that surrounds a white dwarf.
Thanks hope I am right.
No it's the quite opposite simple
Answer:
E₄ = - 0.85 eV
E₂ = - 3.4 eV
Ephoton = 2.55 eV
Explanation:
The sum of Kinetic Energy (K) and Potential Energy (U) of the Helium atom is equal to the total energy of Helium atom in the specified state N. From Bohr's atomic model, the energy of a hydrogen atom in state N is given as:
En = K + U = (-1/n²)(13.6 eV)
a)
Here,
n = 4
Therefore,
E₄ = (-1/4²)(13.6 eV)
<u>E₄ = - 0.85 eV</u>
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b)
Here,
n = 2
Therefore,
E₂ = (-1/2²)(13.6 eV)
<u>E₂ = - 3.4 eV</u>
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c)
The energy of photon emitted in the transition from level 4 to level 2 will be equal to the difference in the energy of both levels:
Ephoton = ΔE = E₄ - E₂
Ephoton = - 0.85 eV - (- 3.4 eV)
<u>Ephoton = 2.55 eV</u>
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Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of options. However, <u>Astronauts working in space do not have any external force acting upward or downward on them; meaning there is no contact force pushing or pulling there body and thus experience/feel weightlessness</u>. This causes them to be in a state of constant free fall when they are orbiting the earth. This free fall is similar to what is experienced in elevators and roller coasters in amusement parks.