本题目来源于试卷: Nuclear Energy; Effects and Uses of Radiation，类别为 IB物理学
[问答题]
(a) Compare the energy needed for the firs. qxnx. ew; ;vhiyeeax1*iw) * bw0s/kt reaction of the carbon cycle4:0w or abss-(wd3j jvmw*jf- to that for a deuterium-trif4jrmj dajwovw-s-bw3s:(0 * tium reaction.
(b) If a deuterium–tritium reaction requires $T \approx 3 \times 10^8\ \text{K}$, estimate the temperature needed for the first carbon-cycle reaction.
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