本题目来源于试卷: Physics Unit12: Sound，类别为 通用国际物理
[单选题]
The intensity at a distance of 6ky)nme9ik zn o ommvqsw-:8/q81bw64 :o;ho r.0 m from a sourc 1xgys o:nxer25:t dqus,2p23f 0vojre that is radiating equally in all df pxo1r:x5ros2yjtg: sun, 2vd30 qe2irections is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the power emitted by the source?
A. $2.1 \times 10^{-8} \; W$
B. $2.7 \times 10^{-7} \; W$
C. $2.1 \times 10^{-6} \; W$
D. $2.7 \times 10^{-5} \; W$
参考答案: B
本题详细解析:
暂无
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