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Explanation:
How Age and Exercise Affect Your Max Heart Rate. The relationship between the heart and exercise has been studied for more than six decades and the research is clear: Max heart rate—the highest heart rate you can safely hit during exercise—decreases with age regardless of lifestyle or level of fitness.
Answer:
Experience
Explanation:
Little basic experience will do. You don't have to be a pro. Have fun.
Answer:
Because the mass contributed by electrons is dwarfed by the nuclear contribution. There exists three orders of magnitude difference. Electronic mass can be ignored to a first approximation.
Explanation:
