1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gnom [1K]
3 years ago
11

Explain what dispersion is and how astronomers use this phenomenon to study a star’s light.

Physics
1 answer:
My name is Ann [436]3 years ago
6 0

Answer:

Splitting of light in seven different colors showing the complete spectrum is known as dispersion.

Explanation:

The visible part of the complete EM spectrum, visible light, is made up of seven different colors (Acronym: VIBGYOR). When visible light beam is passed through a prism or diffraction grating it splits into 7 different colors, this process is known as dispersion. The band of 7 colors is called as Spectrum of light.

Every element shows a different spectrum. When we study the spectrum of a compound we can get to know which all elements are present inside it. This technique is known as Spectroscopy.

The same technique is used to study the composition of stars. Astronomers study the spectrum of light coming from the stars to know the elements present inside them. Along with that we can also find out the relative motion of stars using the Doppler's effect. We can get to know whether an object is moving towards or away from us by studying its spectrum.

You might be interested in
A baseball has a momentum of 6.0 kg.m/s south and mass of 0.15kg. What’s the baseballs velocity?
Mashcka [7]

Answer:

<em>v=40 m/s south</em>

Explanation:

<u>Momentum </u>

It's a physical magnitude that measures the product of the mass by the velocity of a particle. Its units in the International System is kg.m/s and the formula is

p=m.v

Where m is the mass and v the velocity of the particle. If we wanted to solve for v, we have

\displaystyle v=\frac{p}{m}

The baseball has a momentum of 6.0 kg.m/s south and mass of 0.15kg, thus

\displaystyle v=\frac{6}{0.15}=40\ m/s

The velocity is directed to the south

3 0
4 years ago
....................................................
iragen [17]
....................................
8 0
3 years ago
Read 2 more answers
Suppose the Sun moved twice the distance from Earth. Describe immediate and future changes to our planet. Justify your reasoning
Reptile [31]
Our year would now be 2.8 times longer, we would also be receiving only 1/4 of the energy from the sun that we currently do. This means that we’d now be out beyond the orbit of Mars and right at the edge of the asteroid belt, and things would rapidly get very cold with temperatures expected to drop by around 50 degrees Celsius on average, and that’s with our current atmospheric composition which would not be stable in the new conditions. And also, any living thing on earth would die.
5 0
2 years ago
Which word in the sentence is a gerund?
OleMash [197]
A gerund usually ends wit -ing, so we must find the word that includes that.

Loading includes ing at the end.

Final answer: b. loading
8 0
3 years ago
Read 2 more answers
What is your acceleration while sitting in your chair. the latitude of corvallis is 44.4˚.?
marta [7]
 <span>You can start with the equations you know 

a=v^2/r = (2pi*r/T)^2/r = 4pi^2r/T^2 

Radius of earth (R) = 6378.1 km 
Time in one day (T) = 86400 seconds 
Latitude = 44.4 degrees 

If you draw a circle and have the radius going out at a 44.4 degree angle above the center you can then find the r. 

r=Rcos(44.4) 
r=6378.1cos(44.4) 
r= 4556.978198 km or 4556978 m 

Now you can plug this value into the acceleration equation from above... 

a= 1.8*10^8/7.47*10^9 
a= .0241 m/s^2 </span>
8 0
3 years ago
Other questions:
  • A peg is located a distance h directly below the point of attachment of the cord. If h = 0.760 L, what will be the speed of the
    7·1 answer
  • In a double-slit experiment, the distance from one slit to the m = 3 bright fringe is 2,000,198.2λ. What is the distance from th
    9·1 answer
  • A vector of components (−3, −2) is multiplied by the scalar value of -6. What is the magnitude and direction of the resultant ve
    10·1 answer
  • The wavelength of the light is 0.63 micrometers. How much of this length stays in 1 centimeter
    6·1 answer
  • Which of the following are transferred or shared when two atoms react chemically? *
    9·1 answer
  • Which element has 24 protons
    8·1 answer
  • Choose the incorrect statement about the proton: Group of answer choices The proton has the atomic mass of 1 amu The proton has
    15·1 answer
  • One object has a negative charge. The other object has a positive charge.
    13·1 answer
  • A chief finds a glittering stone which he shows to the family. The family assures him that the stone is pure gold but he doubts.
    7·1 answer
  • Two forces act on wooden box with mass of (30kg) (if F1,=85.7N east and F270.7N west):
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!