The speed of light is 2.998 × 108 m/s. One light-year is the distance that light travels in one year. One Astronomical Unit (AU) is 1.50 × 108 km. (a) How many meters are in 1.0 light-year? (b) How many meters are in 1.000 light-year? (c) How many AU are in 1.00 light-year? (d) What is the speed of light in AU/h?

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.