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Galileo's Square Cube Law - Colorado Association of Science ...

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Size & Heart Rate<br />

• Smallest animals have<br />

much higher heart rates.<br />

• Mouse: 500 beats/min<br />

• Human: 70 beats /min<br />

• Elephant: 28 beats / min<br />

• Heart rate to body mass:<br />

R = (K m) -1/4 .

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