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A typical laboratory centrifuge rotates at 4500 rpm. Test tubes have to be located into a centrifuge very carefully because of the very large accelerations.
(a) Find the acceleration at the end of a test tube that is 12 centimeter from the axis of rotation?
m/s2
(b) For comparison, find what is the magnitude of the acceleration a test tube would experience if dropped from a height of 0.8 meter and stopped in a 1.0 ms long encounter with a hard floor?
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The average speed of blood in the aorta is 0.294 m/s and the radius of the aorta is 1.04 cm. There are about 1.97 × 109 capillaries with an average radius of 6.09 ?m. What is the approximate average speed of the blood flow in the capillaries?
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