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
lara [203]
3 years ago
14

BRAINLIEST BRAINLIEST IS OPENNN

Physics
1 answer:
Allushta [10]3 years ago
8 0

Answer:

PART 1

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.

To conclude, Dwarf stars are small but have a high surface temperature. They are dimmer than the sun.

PART 2

The Hertzsprung-Russel Diagram also known as HR diagram is stars' scatter plot showing the relation of luminosity or absolute magnitude vs spectral class or surface temperature. The main sequence stars can be plotted on a HR Diagram as a diagonal band as their physical properties vary a lot.

The mass of these stars ranges from about a tenth of that of the Sun to about 200 times the mass of the Sun. Inside these stars Hydrogen fusion results in Helium. 90% of the stars, including the Sun, in the Universe lies in this category.Their surface temperature lies in the range of 2500 Kelvin to 40000 Kelvin.

So technically you would find a Dwarf star near higher temperatures but lower luminosity than stars like the sun.  

Hope it helped!

You might be interested in
To what temperature will a 79.0 g piece of glass raise if it absorbs 9457 calories of heat and its specific heat capacity is 0.5
ruslelena [56]

Answer:

T_final = 279.4 [°C]

Explanation:

In order to solve this problem, we must use the following equation of thermal energy.

Q=m*C_{p}*(T_{f}-T_{i})

where:

Q = heat = 9457 [cal]

m = mass = 79 [g] = 0.079 [kg]

Cp = specific heat = 0.5 [cal/g*°C]

T_initial = initial temperature = 40 [°C]

T_final = final temperature [°C]

9457 = 79*0.5*(T_{f}-40)\\239.41=T_{f}-40\\\\T_{f}=279.4[C]

8 0
3 years ago
Why is physics important to everyone? Describe 5 applications of physics in everyday life.
Sedaia [141]

1. Communication

   In early ages people were using letters to communicate between them. Now days instantly we can call one person from anywhere, these are based on optical fiber communication and it is an application of physics.

2. Transportation

  We can travel from place to anther place by aeroplane , these technologies are introduced after advancement in physics.

3. Construction

 Earlier people used to stay in small houses, now days apartments with many number of storeys are built by considering all the forces coming on the structure.

4. Medical Department

 The invention of many equipment increased the health of humans.

5. Weather forecasting

 The prediction of weather considering all the available factors, prediction of natural disasters all are application of physics.

4 0
3 years ago
A device used to increase or decrease the emf in the second of two unconnected coils is a
grigory [225]
<span>The answer is transformer. They utilize electromagnetic induction to generate current. This is only possible in alternating current due to the differential increase and decrease of electrical current that induces changes in magnetic flux in the coil. This varies the magnetic flux of the primary coil that generates current in the secondary coil.</span>
4 0
3 years ago
The oscillation of the 2.0-kg mass on a spring is described by x = 3.0 cos (4.0 t) where x is in centimeters and t is in seconds
jeka57 [31]
X is the answer because x can be any thing
7 0
3 years ago
During a biology lab, students use a small knife called a scalpel to examine a large cricket. One student is accidentally cut by
trasher [3.6K]
All except the first one. I just took the test.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What does a trench form?What happens here?
    12·1 answer
  • When light of wavelength 240 nm falls on a potassium surface, electrons having a maximum kinetic energy of 2.93 eV are emitted.
    9·1 answer
  • minerals all have a ___ structure with the same ___ composition. 1. a. heterogeneous b. homogeneous 2. a. physical b. chemical​
    13·2 answers
  • As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. If the frequency of this light wave is 1.1 x
    9·1 answer
  • As light travels from air to water to glass, it will refract. The best explanation for this would be
    13·2 answers
  • What is physics and is it related to chemistry? ​
    5·1 answer
  • All of the following are basic need of young children, except
    12·2 answers
  • A plastic sphere floats in water with 50.0% of its volume submerged. This same sphere floats in glycerin with 40.0% of its volum
    6·1 answer
  • A shopkeeper uses a force of 50N to lift a box to a shelf 1.5m high. How much work is done?
    11·1 answer
  • A proton accelerates from rest in a uniform electric field of 664 N/C. At some later time, its speed is 1.46 106 m/s. (a) Find t
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!