Explanation:
Red dwarf and brown dwarf masses are less than a typical white dwarf mass measuring around 1.2 solar masses. But it's only a few kilometers of the radius. This is precisely because there is no force to overcome the contraction due to gravity. There is a constant battle between the external force of fusion (who wants to expand the star) and inward pressure because of gravity (who wants to compact the star) of regular stars on the main sequence. There remains a balance between these two forces as long as the star remains on the celestial equator.
Red dwarfs are helped by the nuclear fusion force, but brown dwarfs were not large enough to cause the fusion of hydrogen, they are massive enough to generate sufficient energy in the core by fusing deuterium to sustain their volume. However as soon as the star runs out of hydrogen to burn it weakens the force of the external fusion and gravity starts to compact the center of the star. The contraction heats up the core into more massive stars and helium fusion begins, rendering the star once again stable. However this helium fusion does not occur in stars with masses below 1.44Mo. Tightness persists for such stars until the star's gasses degenerate.
Answer:
we know that
ke=1÷2×mv^2
and when speed become triple of original then new speed become 3v
then,new ke=1÷2×m(3v)^2
=1÷2×9mv^2
9×original ke
hence ke will increase by 9 times
When a neutron or a proton in the nucleus changes a gamma ray is produced (gamma rays are electromagnetic waves)
When an electron drops from a higher energy level to a lower energy level an electromagnetic wave is give off.
Hey there!
Here is your answer:
<u><em>The proper answer to this question is a "igneous rock".</em></u>
Reason:
<u><em>Metamorphic rock: Formed by heat and pressure under the Earths crust.</em></u>
<u><em>Sedimentary rock: Formed by deposition in rivers and pressure causes the rocks to compact.</em></u>
<u><em>Igneous rock: The cooling of lava and it crystalizes.</em></u>
<em>Therefore the answer is Igneous rock.</em>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
Answer:
D. 24 lb
Explanation:
Tina has been dieting for 13 weeks
First week she lost 3 pounds
Next week she gained 1 pound and did not lose any. This will be subtracted as she has gained a pound
The remaining 11 weeks she lost 2 pounds per week
Weight lost in the 11 weeks = 11×2 =22 pounds
Total weight lost
3-1+22 = 24 lb
Tina has lost 24 pounds in total during the 13 weeks
