Mass of the Sun = <span>1.989 × 10^30 kg
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Stage 2 sleep shows Theta waves
While the total energy<span> of a system is always conserved, the </span>kinetic energy<span> carried by the moving objects is not always conserved. In an inelastic collision, </span>energy<span> is </span>lost<span> to the environment, transferred into other forms such as heat.
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