4.2 revolution/second is how many revolution/hour

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3.7 revolution/second is how many revolution/hour 3.8 revolution/second is how many revolution/hour 3.9 revolution/second is how many revolution/hour 4 revolution/second is how many revolution/hour 4.1 revolution/second is how many revolution/hour 4.2 revolution/second is how many revolution/hour 4.3 revolution/second is how many revolution/hour 4.4 revolution/second is how many revolution/hour 4.5 revolution/second is how many revolution/hour 4.6 revolution/second is how many revolution/hour 4.7 revolution/second is how many revolution/hour

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