The velocity within the eye of a tornado shown in $($Figure $1)$ is defined by $v_r=0,$

$v_{}=(0\mathrm{.}4r)\frac{m}{s},$ where $r$ is in meters.

Part A

Determine the circulation at $r_1=120m.$

Express your answer using three significant figures.

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Part B

Determine the circulation at $r_2=200m.$

Express your answer using three significant figures.

View Available Hint$($s$)$

$=|$~$\frac{m^2}{s}$

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