The mass of an object is an unchanging property of an object. It is a fundamental measure of the amount of matter (stuff) present in the object. The SI unit of mass is kilogram (kgkg). [1 kgkg=2.2 lblb on Earth] Whereas, the weight is the force, the pull of gravity, acting on the object by the nearest most massive body such as Earth. The more massive the body, the greater is its force of gravitation. The mass of an object remains the same no matter where it is located whereas the weight depends entirely upon its location since the value of gravity varies from place to place. The relative gravity at different celestial location compared to Earth are listed below: Location Relative Gravity Earth 1.00 Outer space 0 Earth's moon 0.17 Mars 0.38 Jupiter 2.36 Saturn 0.92 Part A Consider an object of mass 45 kgkg. Rank the weight of this object at the following locations. Rank from heaviest to lightest. To rank items as equivalent, overlap them. Part B What would be the weight of an object on Jupiter if the object weighs 1.7 lblb on Mars? Express your answer to two significant figures, and include the appropriate units. Part C What would be the mass of an object on Jupiter if the object has a mass of 1.7 kgkg on Mars? Express your answer with the appropriate units.

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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.