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Grow up man, this is completely based on your curriculum, we would need your book to answer, and this has to be done by you.
The answer is c you got to look for answers that make sense
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the branch of science concerned with the nature and properties of matter and energy
Anything times zero is zero
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In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.