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 distancet31ju m,5 csb eanqf54 of 6.0 m from a source that is /lin *dvl6m3btr.uu/9in3rngyc 80n radiating equally in all directin3cul8 9i*rv/0miyd ng/bnun .6r3tl ons is
$6.0 \times 10^{-10} \; W/m^{2}$. What is the intensity level in dB?
A. $18 \; dB$
B. $23 \; dB$
C. $28 \; dB$
D. $32 \; dB$
参考答案: C
本题详细解析:
暂无
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