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Why do protostars reach a stage at which they stop contracting?
Eventually, when the star becomes sufficiently massive, the pressure in the core sends temperatures high enough to begin nuclear fusion, and gravity (which so far has been the dominant force) is counterbalanced by radiation pressure.
3 layers of the suns atmosphere?
The three layers of the Sun's atmosphere are the photosphere, the chromosphere, and the corona. The photosphere is the visible surface where sunspots are found. The chromosphere is a thin layer above the photosphere where solar flares occur. The corona is the outermost layer of the Sun's atmosphere, extending millions of kilometers into space.
When Inside a star the force of gravity is balanced by the?
It is balanced by radiation pressure, and gas pressure.
Stars balance there inside gravity by?
The inward force of gravity is counteracted by two outward forces: gas pressure, and radiation pressure. Once the star runs out of fuel, the radiation pressure stops, the gas pressure is no longer enough to counteract gravity, and the star collapses - into a white dwarf, a neutron star, or a black hole, depending on its mass.
What is the innermost layer of the sun's atmosphere called?
The suns core is the innermost portion or the photosphere of the sun. It's the hottest layer and under the highest pressure, enabling nuclear fusion to take place, which produces the energy. The suns core temperature is estimated to be around 13.6 million degrees Kelvin.
Why do protostars reach a stage at which they stop contracting?
Eventually, when the star becomes sufficiently massive, the pressure in the core sends temperatures high enough to begin nuclear fusion, and gravity (which so far has been the dominant force) is counterbalanced by radiation pressure.
What type of blood pressure is measured when the left ventricle is contracting?
The systolic pressure.
3 layers of the suns atmosphere?
The three layers of the Sun's atmosphere are the photosphere, the chromosphere, and the corona. The photosphere is the visible surface where sunspots are found. The chromosphere is a thin layer above the photosphere where solar flares occur. The corona is the outermost layer of the Sun's atmosphere, extending millions of kilometers into space.
How are heart contractions and blood pressure related?
Yes. The top number which is called Systolic is the pressure on the arteries when the heart is contracting. The bottom number which is called Diastolic, is the pressure on the arteries when the heart is relaxed. If you were to feel your pulse, it has a rhythm. When you feel the heart is contracting. The heart is relaxing between the beats.
What are environmental factors affecting mutation under radiation?
radiation survival pressure
What prevents a white dwarf from contracting?
The pressure within the white dwarf. The situation is somewhat different from normal gas pressure; the kind of pressure within a white dwarf is called "degenerate pressure".
When measuring blood pressure what does 201 over 80 mean?
It means that the pressure in your arteries is enough to push mercury 80 millimeters up a tube when your heart is not contracting, and 201 millimeters when your heart is contracting. It also means you need to take measures to lower your blood pressure, as this is generally too high in the long run.
What does weight lifting do for your muscles?
Weight lifting is the process of contracting your muscles with applied pressure. With enough pressure being pushed muscles will eventually grow.
What does what weight lifting do for your muscles?
Weight lifting is the process of contracting your muscles with applied pressure. With enough pressure being pushed muscles will eventually grow.
When Inside a star the force of gravity is balanced by the?
It is balanced by radiation pressure, and gas pressure.
What is the difference between systolic pressure and diastolic pressure?
systolic pressure when ventricals are contracting while during diastole they are in relaxed state
Blood pressure during heart contraction?
Yes. The top number which is called Systolic is the pressure on the arteries when the heart is contracting. The bottom number which is called Diastolic, is the pressure on the arteries when the heart is relaxed. If you were to feel your pulse, it has a rhythm. When you feel the heart is contracting. The heart is relaxing between the beats.
