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    MATERIAL FROM CLASS:

  • Powers of ten, measuring angles, metric units (pdf)
  • Using ratios to simplify your life and your calculations
  • Why Pluto is no longer considered a planet (by some)

    Significant figures:
    Speed of light c = 2.977 924 58 x 105 km/sec;
    Solar power output 3.8 or 3.9 x 1026 W (that's all we know)