Prometric - My name is Emerica and I have taken 2 exams with you. My name is Emerica and I have taken 2 exams with u and I really like to contact you about other programs that are done in your program. I want to know if you have institute or college that offers nursing programs, if so, what's the requirements.
As the gas falls together, it gets hot. A star forms when it is hot enough for nuclear reactions to start. This releases energy, and keeps the star hot. Gravity pulls the dust and gas together. During its 'main sequence' period of its life cycle, a star is stable because the forces [force: A push or a pull.The unit of force is the newton, 'N'. ] in it are balanced.The outward pressure from the expanding hot gases is balanced by the force of the starâs gravity. Our Sun is at this stable phase in its life.uring its 'main sequence' period of its life cycle, a star is stable because the forces [force: A push or a pull. The unit of force is the newton, 'N'. ] in it are balanced. The outward pressure from the expanding hot gases is balanced by the force of the starâs gravity. Our Sun is at this stable phase in its life.
Red Giant: Over the course of its life, a star is converting hydrogen into helium at its core. This helium builds up and the hydrogen fuel runs out. When a star exhausts its fuel of hydrogen at its core, its internal nuclear reactions stop. Without this light pressure, the star begins to contract inward through gravity.