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
raketka [301]
3 years ago
11

90% of stars are ______________.

Physics
2 answers:
Anarel [89]3 years ago
5 0

Answer:

About 90 percent of the star in the universe including the Sun are main sequence star

90% of stars are ______________.

white dwarfs

black holes

supergiants

<u>main sequence</u>

<em>Hope</em><em> this</em><em> helps</em>

Sergeu [11.5K]3 years ago
4 0

Answer:

main sequence stars

Explanation:

Main sequence stars fuse hydrogen atoms to form helium atoms in their cores. About 90 percent of the stars in the universe, including the sun, are main sequence stars. These stars can range from about a tenth of the mass of the sun to up to 200 times as massive.

You might be interested in
Intravenous infusions are often made under gravity.
hodyreva [135]
The pressure exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation p = ρgh, where g is the gravitational acceleration.
p = ρghρ = 1000 kg/m3g = 9.81 m/s2convert mm h20 to Pa700 mm H20 ( 9.81 pa / 1 mm h2o)= 6867 Pa 
6867 Pa = (1000 kg/m3)(9.81 m/s2)hh = 0.7 mh = 700 mm
4 0
4 years ago
What happens to white light when it passes through a prism
love history [14]

Answer:

Refraction splits the light into its component wavelengths, and you see a rainbow.

6 0
4 years ago
The Andromeda Galaxy (our nearest spiral neighbor) has spectral lines that show a blue shift. From this we may conclude that:
saw5 [17]

The universe is the collection of galaxies, The Andromeda Galaxy has spectral lines with blue shift. The conclusion is that the Universe has stopped expanding.

<h3>What is Andromeda Galaxy?</h3>

The Andromeda Galaxy is the nearest spiral neighbor that has spectral lines showing a blue shift.

Therefore, this concludes that, the Universe has stopped expanding. This galaxy is slowly shifting towards us.

Learn more about Andromeda Galaxy.

brainly.com/question/1499364

#SPJ1

8 0
2 years ago
Dina has a mass of 50 kilograms and is waiting at the top of a ski slope that’s 5.0 meters high.
Over [174]
All of Dina's potential energy Ep is converted into kinetic energy Ek so Ep=Ek, where Ep=m*g*h and Ek=(1/2)*m*v². m is the mass of Dina, h is the height of ski slope, g=9.8 m/s² and v is the maximal velocity. 

So we solve for v:

m*g*h=(1/2)*m*v², masses cancel out,

g*h=(1/2)*v², we multiply by 2,

2*g*h=v² and take the square root to get v

√(2*g*h)=v, we plug in the numbers and get:

v=9.9 m/s. 

So Dina's maximum velocity on the bottom of the ski slope is v=9.9 m/s.
8 0
3 years ago
Read 2 more answers
Potential energy becomes kinetic energy when:
Sedbober [7]

Answer:

An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).

EXAMPLE: A rock sitting on the edge of a cliff. If the rock falls, the potential energy will be converted to kinetic energy, as the rock will be moving. A stretched elastic string in a longbow.

5 0
2 years ago
Other questions:
  • : Two containers have a substantial amount of the air evacuated out of them so that the pressure inside is half the pressure at
    10·1 answer
  • A runner runs 4875 ft in 6.85 minutes. what is the runners average speed in miles per hour?
    5·2 answers
  • Which of the following takes place in the combustion chamber of a gas turbine engine?
    10·2 answers
  • a large cargo trucks needs to cross a bridge the truck is 30m long, and 3.2 wide, the cargo exerts a force of 54,000 N the bridg
    5·1 answer
  • A human being can be electrocuted if a current as small as 50 mA passes near the heart. An electrician working with sweaty hands
    12·1 answer
  • What are the four basic units of electricity? provide the variable name and symbol, and unit name and symbol.
    14·2 answers
  • The number of windings on the primary coil of a transformer
    8·1 answer
  • A 20 kg weight is suspended from a string. What is the tension on the string
    5·2 answers
  • A plane flying horizontally at 384 m/s releases a package at an altitude of 15,721 m.
    14·1 answer
  • Particle dislodgement in the filtration process is generally undesirable, except during?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!