英语:it's good ( ) hot food if you have a cold.甲同学站在钢管一端,乙在另一端.甲敲了一下钢管,乙听到两次声音,相隔3S.已知当时气温15度,钢管长1120m,求钢管传音的声速.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/20 09:40:50
![英语:it's good ( ) hot food if you have a cold.甲同学站在钢管一端,乙在另一端.甲敲了一下钢管,乙听到两次声音,相隔3S.已知当时气温15度,钢管长1120m,求钢管传音的声速.](/uploads/image/z/10609309-37-9.jpg?t=%E8%8B%B1%E8%AF%AD%EF%BC%9Ait%27s+good+%28+%29+hot+food+if+you+have+a+cold.%E7%94%B2%E5%90%8C%E5%AD%A6%E7%AB%99%E5%9C%A8%E9%92%A2%E7%AE%A1%E4%B8%80%E7%AB%AF%2C%E4%B9%99%E5%9C%A8%E5%8F%A6%E4%B8%80%E7%AB%AF.%E7%94%B2%E6%95%B2%E4%BA%86%E4%B8%80%E4%B8%8B%E9%92%A2%E7%AE%A1%2C%E4%B9%99%E5%90%AC%E5%88%B0%E4%B8%A4%E6%AC%A1%E5%A3%B0%E9%9F%B3%2C%E7%9B%B8%E9%9A%943S.%E5%B7%B2%E7%9F%A5%E5%BD%93%E6%97%B6%E6%B0%94%E6%B8%A915%E5%BA%A6%2C%E9%92%A2%E7%AE%A1%E9%95%BF1120m%2C%E6%B1%82%E9%92%A2%E7%AE%A1%E4%BC%A0%E9%9F%B3%E7%9A%84%E5%A3%B0%E9%80%9F.)
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英语:it's good ( ) hot food if you have a cold.甲同学站在钢管一端,乙在另一端.甲敲了一下钢管,乙听到两次声音,相隔3S.已知当时气温15度,钢管长1120m,求钢管传音的声速.
英语:it's good ( ) hot food if you have a cold.
甲同学站在钢管一端,乙在另一端.甲敲了一下钢管,乙听到两次声音,相隔3S.已知当时气温15度,钢管长1120m,求钢管传音的声速.
英语:it's good ( ) hot food if you have a cold.甲同学站在钢管一端,乙在另一端.甲敲了一下钢管,乙听到两次声音,相隔3S.已知当时气温15度,钢管长1120m,求钢管传音的声速.
eating
气温15度,声音在空气中的传播速度为:340 m/s
假设钢管传音的声速为x m/s
那么
(x-340)*3=1120
x=340+1120/3=713.3m/s
当气温为15度时,声音的速度为340m/s
设钢管传声的速度为Xm/s
1120/x +3 =1120/340
1120/x=100/340
交叉相乘
x=3808m/s
验算:1120/3808=0.29s 1120/340=3.29s
3.29-0.29=3s
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