ISP Chapter 10 - Chapter 10: The Sun SUN HANDOUT ON ANGEL!...

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Chapter 10: The Sun SUN HANDOUT ON ANGEL!!!!!! SUN FACTS Radius- about 109 times Earth Mass: 300,000 Earths (2x10 30 kg) Luminosity: 3.8x10 26 watts ? A 100-watt light bulb uses 100 J/s. How long will it glow if it’s attached to a battery containing 10^5 J? -1,000 seconds Predicted Life = Energy available/rate of energy loss = energy available/ luminosity ? How long can Sun keep radiating its current luminosity (4x10 26 ) until it uses up all its chemical energy (4x10 38 J)? -about 10^12 seconds (30,000 years) E=mc 2 how much stored energy in mass Nuclear Energy: 1 x 10^46 J Only 10% of the total actually available in the core Estimated LE (100 billion years) NUCLEAR REACTIONS Fission - big nucleus splits into smaller pieces (nuclear power plants) Fusion - small nuclei stick together to make a bigger on (sun, stars) ? In a nuclear fusion reaction (2 protons fuse to make a He nucleaus) what is the source of energy released? -mass is converted to energy
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This note was uploaded on 11/16/2011 for the course ISP 205 taught by Professor Donahue during the Fall '08 term at Michigan State University.

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ISP Chapter 10 - Chapter 10: The Sun SUN HANDOUT ON ANGEL!...

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