\( \frac{1}{2} \) hour means half of 60 minutes.<br><br>
&bull; \( \frac{1}{2} \) h = 60 ÷ 2 = 30 min<br>
&bull; 30 min = 30 × 60 = 1800 s<br><br>
Final Answer: 30 min, 1800 s