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natali 33 [55]
3 years ago
15

Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it

is an emission line spectrum or an absorption line spectrum?
Physics
1 answer:
amm18123 years ago
4 0

Answer:

An emission line spectrum consists of bright lines on a dark background, while an absorption line spectrum consists of dark lines on a rainbow background.

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Where does most star formation occur in the milky way galaxy?
k0ka [10]

Answer:

Star formation occurs most rapidly in the spiral arms, where the density of interstellar matter is highest.

4 0
2 years ago
Sound with a frequency of 1250 Hz leaves a room through a doorway with a width of 1.05 m.At what minimum angle relative to the c
kiruha [24]

Answer:

15.19°, 31.61°, 51.84°

Explanation:

We need to fin the angle for m=1,2,3

We know that the expression for wavelenght is,

\lambda = \frac{c}{f}

Substituting,

\lambda = \frac{344}{1250}

\lambda = 0.2752m

Once we have the wavelenght we can find the angle by the equation of the single slit difraction,

sin\theta = \frac{m \lambda}{W}

Where,

W is the width

m is the integer

\lambda the wavelenght

Re-arrange the expression,

\theta = sin^{-1} \frac{m\lambda}{W}

For m=1,

\theta = sin^{-1} \frac{1 (0.2752)}{1.05}= 15.19\°

For m=2,

\theta = sin^{-1} \frac{2 (0.2752)}{1.05}= 31.61\°

For m=3,

\theta = sin^{-1} \frac{3 (0.2752)}{1.05}= 51.84\°

<em>The angle of diffraction is directly proportional to the size of the wavelength.</em>

5 0
3 years ago
Bro what does this mean ? I don’t get this
zhannawk [14.2K]

CO2 is carbon dioxide a colorless gas

3 0
3 years ago
Read 2 more answers
It moved from 0 cm to 5 cm at a constant speed of 1 cm/s.
Stels [109]

It moved from 0 cm to 4 cm at a constant speed of 1 cm/s.

8 0
3 years ago
the speed of sound in the air is about 340m/s. what is the wavelength of a sound wave with a frequency of 400Hz?
olga2289 [7]

Wavelength = (speed) / (frequency)

Wavelength = (340 m/s) / (400 /s)

<em>Wavelength = 0.85 meter</em>

5 0
3 years ago
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