但是是英文的,希望有人可以帮忙!
来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/28 10:38:25
但是是英文的,希望有人可以帮忙!
Two in-phase speakers are 2.80 m apart and emit an unknown single frequency of sound in all directions.At a point 2.00 m away from one speaker on the line AB between the two speakers a sound detector records a sound intensity maximum.The detector is then moved perpendicularly away from the line AB.The first time the sound intensity is again measured to be a maximum occurs at y= 1.82 away from the line AB.
What is the frequency of the sound emitted by the speakers?(NOTE:The path difference decreases as the detector moves away from the line AB; therefore you can't assume that the path difference initially is one wavelength.You must leave n as a variable and algebraically eliminate it.)
Two in-phase speakers are 2.80 m apart and emit an unknown single frequency of sound in all directions.At a point 2.00 m away from one speaker on the line AB between the two speakers a sound detector records a sound intensity maximum.The detector is then moved perpendicularly away from the line AB.The first time the sound intensity is again measured to be a maximum occurs at y= 1.82 away from the line AB.
What is the frequency of the sound emitted by the speakers?(NOTE:The path difference decreases as the detector moves away from the line AB; therefore you can't assume that the path difference initially is one wavelength.You must leave n as a variable and algebraically eliminate it.)
两个同相的扬声器相距2.80m,分别向四周各个方向发射未知单频率的声波.在扬声器之间AB的连线上,距一个扬声器2.00m处,一个声波检测者观测到了声音强度的极大值.然后检测者垂直于AB连线移动,在距AB连线的垂直距离为y=1.82m处第一次再次(真别扭,理解就好)测得声音强度的极大值.
问扬声器发射的波的频率是多少?(提示不翻译了,大意是在距A2.00m处的极大不能把路程差取为1个波长,应该是n个波长)
记第一次极大处为C点,垂线上再次极大处为D点.
由提示,显然有nλ=AC-BC
又有(n-1)λ=AD-BD
由勾股定理可求出AD,BD
算出n,λ.根据λf=v,v=340m/s算出频率f.
(楼主数据没错吗?我算了一下,n竟然不是整数.反正已经翻译了,你自己算算吧.)
再问: 数据肯定不会错啊,因为直接复制过来的,那你算得频率是多少啊?
再答: 我算出来λ=0.5m,频率就是680Hz了。但这肯定不对,你也算算看。
问扬声器发射的波的频率是多少?(提示不翻译了,大意是在距A2.00m处的极大不能把路程差取为1个波长,应该是n个波长)
记第一次极大处为C点,垂线上再次极大处为D点.
由提示,显然有nλ=AC-BC
又有(n-1)λ=AD-BD
由勾股定理可求出AD,BD
算出n,λ.根据λf=v,v=340m/s算出频率f.
(楼主数据没错吗?我算了一下,n竟然不是整数.反正已经翻译了,你自己算算吧.)
再问: 数据肯定不会错啊,因为直接复制过来的,那你算得频率是多少啊?
再答: 我算出来λ=0.5m,频率就是680Hz了。但这肯定不对,你也算算看。
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计算.希望有人可以帮忙做一下.
希望有人可以帮忙翻译一下
大学有机化学,希望可以有人帮忙吧,
各国大城市的英文缩写`希望有人可以告诉我`谢谢`
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马上要到我演讲了,题目是"我的最爱",我想写的有特色一点,但是自己的英语能力不太好,所以希望各位可以帮忙.我想写首英文的
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希望有人帮忙翻译一下这段话,英文,别出现太明显的语法错误,意思差不多就可以了,辛苦了,谢谢!
希望有人可以回答是怎样的意思.