本题目来源于试卷: Physics Unit12: Sound，类别为 国际高中通用物理
[单选题]
On a day when the spcd)dh 0o4 bc:or y0)7*+k1eyi7m j s8fvcxfixim +7vn9y yw.teed of sound in air is 340 m/s, a bat emits a shriek whose echo reimwx9 vnye*+r 0yi+ 1smc if78.7tx)yk 7vfyjaches it 0.0250 s later. How far away was the object that reflected back the sound?
A. $4.25 \; m$
B. $8.50 \; m$
C. $0.425 \; m$
D. $0.850 \; m$
参考答案: A
本题详细解析:
暂无
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