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kogti [31]
3 years ago
11

The hydrogen spectrum has a red line at 656 nm, and a blue line at 434 nm. What is the first order angular separation between th

e two spectral lines obtained with a diffraction grating with 5000 rulings/cm?
Physics
1 answer:
Delvig [45]3 years ago
5 0

Answer:

Explanation:

grating element or slit width a = 1 x 10⁻² / 5000

= 2 x 10⁻⁶ m

angular width of first order spectral line of wavelength λ

= λ / a

for blue line angular width

= 434 x 10⁻⁹ / 2 x 10⁻⁶ radian

= 217 x 10⁻³ radian

for red line angular width

= 656 x 10⁻⁹ / 2 x 10⁻⁶ radian

= 328 x 10⁻³ radian

difference of their angular width

= 328 x 10⁻³  - 217 x 10⁻³

= 111 x 10⁻³ radian

Ans .

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Someone can help me pls <br><br> Is physical science class
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A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the pl
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Answer:

d=0.137 m ⇒13.7 cm

Explanation:

Given data

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4 0
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2 pts
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2 years ago
What do astronomers use in addition to parallax to find the actual distance of stars that are close to Earth?
IgorLugansk [536]

Answer:

trigonometry (guessing)

Explanation:

ellipse: is the shape of an orbit : looks like an oval

periapsis : shortest distance between something like the moon and the planet its orbiting around like the earth

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https://science.howstuffworks.com/question224.htm

By comparing the intrinsic brightness to the star's apparent brightness we can calculate the distance of stars

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https://www.space.com/30417-parallax.html

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blossoms.mit.edu

.

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