HELP~!!!someone who's good at PHYSICS~!
答案:2 悬赏:10 手机版
解决时间 2021-05-02 13:56
- 提问者网友：斑駁影
- 2021-05-01 15:15
A bat flying in a cave emits a sound pulse and receives its echo in 2.9 s. How far away is the cave wall?
最佳答案
- 五星知识达人网友：你哪知我潦倒为你
- 2021-05-01 16:17
What's the speed of the sound?? This is very important...
全部回答
- 1楼网友：持酒劝斜阳
- 2021-05-01 16:38
Easy...
340m/s * 2.9s / 2 = 493m
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