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Anarel [89]
2 years ago
10

How did bohr propose light was emitted from a material?

Physics
1 answer:
Artemon [7]2 years ago
6 0

Answer:

when an electron made a transition from an outer orbit to one closer to the nucleus

Explanation:

Bohr amended that view of the motion of the planetary electrons to bring the model in line with the regular patterns (spectral series) of light emitted by real hydrogen atoms. ... Light, he proposed, radiated from hydrogen atoms only

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A sound wave of frequency 440 Hz is played by a musician. What is the
TiliK225 [7]

Answer:

343/440

Explanation:

Recall that v=d/t

Now, this is the same thing.

Frequency is 1/T and wavelength is the distance travelled in one period.

So Vs=f*λ

(the greek letter is used as the symbol of wavelength; it's arbitrary)

7 0
3 years ago
What precautions should you take when working with electronic equipment?
ollegr [7]

Answer:

Be sure to unplug the power source of all electrical equipment before working on it. Always pull from the plug, not the cord. Always wear proper non conductive clothing – insulated gloves, non conductive protective apparel and shoes with insulated soles. Avoid loose clothing or ties.

7 0
3 years ago
"how long would it take for a ball dropped from the top of a 400-foot building to hit the ground? round your answer to two decim
Lelechka [254]
Hello

Let's convert first the height from foot to meters:
S=400~ft=121.92~m
This is the space covered by the ball in its accelerated motion, where the acceleration is the gravitational acceleration:
a=g=9.81~m/s^2
The law of motion is given by
S= \frac{1}{2}at^2
Re-arranging, we can get the total time of the motion:
t= \sqrt{ \frac{2S}{a} }=4.99~s

which is the time the ball takes to hit the ground.
7 0
3 years ago
Read 2 more answers
I need help pls help
Nikitich [7]
You want all those boxes filled in (0,0)
5 0
4 years ago
How many times Father is Proxima Centauri from the sun then is earth from the sun answer choices about 269,000 times or about 0.
Bas_tet [7]

Answer:

269,000

Explanation:

The distance between Proxima Centauri and the Sun, d₁₁ = 4.246 light years

The distance between Earth and the Sun, d₂ = 1.58 × 10⁻⁵ light years

The ratio of the distances are;

d₁/d₂ = 4.246/(1.58 × 10⁻⁵) = 268734.177215 ≈ 269,000 times

Therefore, Proxima Centauri is approximately 269,000 times further from the Sun than the Earth is from the Sun

4 0
4 years ago
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