For efficiency, you have to consider the energy or work that you get out of the machine, compared to the energy or work that you put into the machine. Its what you get out, divided
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When you take the square root of a whole number, you either get another whole
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The more cigarettes a person smokes, the higher their risk. The amount someone has smoked is often referred to as their pack years. To calculate pack years, multiply the number of
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