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OlgaM077 [116]
3 years ago
10

Why do we use the hydrogen spectrum to identify if a star is red or blue shifted? *

Physics
1 answer:
Lady_Fox [76]3 years ago
6 0

Answer:

But if you place a clear container filled with hydrogen gas between the flashlight and the prism, gaps appear in the smooth rainbow of colors, places where the light literally goes missing. The dark absorption lines of a star at rest (left) get shifted towards red if the star is moving away from Earth (right)

Explanation:

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What kind of engine do most cars use today
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Answer:

4 stroke 4 cylinder Natural Aspirated Gasoline engine

Explanation:

im not 100%  sure

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3 years ago
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Why was the geocentric model of the solar system accepted by scientist for many years?
dolphi86 [110]

Answer: Because of the its assumption of earth being at the centre of the universe and also, its parallax argument.

Explanation: Geocentric model is the

theory of the structure of the solar system (or the universe) in which Earth  is assumed to be at the centre of it all. It was generally accepted until the 16th century, after which it was superseded by heliocentric models 

Among many, geocentric model was considered because of its stellar parallax argument.

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3 years ago
A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most
matrenka [14]

Ultraviolet waves kill bacteria and germs.

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3 years ago
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An SUV has a mass of 6000 kg and a compact car has a mass of 2000 kg. They both go around the same unbanked circular curve on th
Evgen [1.6K]

Answer:

Therefore, the centripetal acceleration of the SUV is <u>3 times</u> ao of the compact car.

Explanation:

FOR SUV:

ac_{suv} = \frac{mv^2}{r}\\

where,

ac_suv = centripetal acceleration of the SUV = ?

m = mass of SUV = 6000 kg

v = speed of SUV = vo

r = radius of path

Therefore,

ac_{suv} = \frac{6000\ vo^2}{r}\\---------------- equation (1)

FOR CAR:

ao = \frac{mv^2}{r}\\

where,

ao = centripetal acceleration of the car = ?

m = mass of car = 2000 kg

v = speed of car = vo

r = radius of path

Therefore,

ao = \frac{2000\ vo^2}{r}\\--------------------- equation (2)

Dividing equation (1) by eq(2):

\frac{ac_{suv}}{ao} = \frac{6000}{2000}\\\\ac_{surv} = 3ao

Therefore, the centripetal acceleration of the SUV is <u>3 times</u> ao of the compact car.

8 0
3 years ago
3.) What is the velocity of a 5.5 kg object that has a momentum of 550 kg-m/s?
stepladder [879]

Answer:

idk

Explanation:

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