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Mass of a mature thoroughbred racehorse (570 kg) is 4 thousand x Mass of the lightest allowable regulation baseball (142 g)
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Energy in 1 food Calorie (kcal) (4.2 kJ)
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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