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01-Work and Mechanical Energy
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02-Form of energy
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03-Sources of energy and the pollution
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04-Radioactivity
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05-Stimulated Nuclear Reactions Fission
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06-Applications and Dangers of radioactivity
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07-History of the development of Astronomy
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08-The solar system
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09-Instruments and Means of Observations
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10-The universe Origin Evolution
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11-Petroleum
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12-Economics and petroleum
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13-Transportation
Instruments and Means of Observation exe.pdf
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