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An airplane propeller is rotating at 1250rpm .

a) Compute the propeller's angular velocity in rad/s.

b) How many seconds does it take for the propeller to turn through 45.0 degrees?

c) If the propeller were turning at 18.0rad/s , at how many rpm would it be turning?

d) When the propeller were turning at 18.0rad/s , what is the period (in seconds) of this propeller?

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