Activity A Direction: Count the number of significant figures of the following: 1. 1.002 km 2. 3.090 m 3. 0.0005679 ml 4. 4.0 x 108 cm² 5. 1.000 N Activity B Direction: convert the following numbers/decimal into scientific notation: 1. 2. 12.09 J 234.09 cm 0000 002 dm

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A: The pendulum makes 103 cycles in 217 seconds. Hence the time T for one cycle is T=217103 seconds.

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Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions.  In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.