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BeauThe two main forces in a star are gravity and nuclear fusion. Gravity pulls matter inward, compressing it and creating the high pressure and temperature needed for nuclear fusion to occur. Nuclear fusion releases energy as light and heat, which counteracts the force of gravity trying to collapse the star.
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What are the main forces that make up a star?
Objects are not made of forces. A star is made of hydrogen, helium and, later in its life, heavier elements.
What are two competing forces in a star?
The two competing forces in a star are gravity, which tries to collapse the star under its own weight, and nuclear fusion, which generates energy and causes the star to expand outward. These forces balance each other to maintain a stable, long-lived star.
What are the two main restroing forces for tides?
The two main restoring forces for tides are gravitational forces from the Moon and the Sun. These forces create bulges in the Earth's oceans, causing high and low tides as the Earth rotates within this gravitational field.
What are the two most abundant elements in a main sequenced star?
The two most abundant elements in a main sequence star are hydrogen and helium. Hydrogen is the primary element, composing about 75% of the star's mass, while helium makes up most of the remaining mass.
Which two factors determine the characteristics of a star?
The two main factors that determine the characteristics of a star are its mass and its age. The mass of a star determines its temperature, size, luminosity, and lifespan. A star's age affects its stage in its life cycle, such as whether it is a young, main-sequence star or an older red giant.
