The $5\mathrm{.}50-$cm$-$long second hand on a watch rotates smoothly.

Part A

What is its angular speed?

Express your answer in radians per second to three significant figures.

$=$

$ra\frac{d}{s}$

Part B

What is the speed of the tip of the hand?

Express your answer with the appropriate units.

$v=|$

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Check that you have converted between SI units of velocity correctly.