# Physics

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Each of the space shuttle's main engines is fed liquid hydrogen by a high-pressure pump. Turbine blades inside the pump rotate at 595 rev/s. A point on one of the blades traces out a circle with a radius of 0.02 m as the blade rotates.
(a) What is the magnitude of the centripetal acceleration that the blade must sustain at this point?
1 m/s2

(b) Express this acceleration as a multiple of g = 9.80m/s2.

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