\textbf{188-} The equation of position -- time of a simple harmonic oscillator in SI is $x = 0.02\sin(100\pi t)$. At the moment $t = \dfrac{1}{150}$ s, the potential energy of the oscillator is how many times its kinetic energy?
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(1) $\dfrac{4}{3}$ \hfill (2) $\dfrac{3}{2}$ \hfill (3) $2$ \hfill (4) $4$
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