In the article, it is stated that sound travels through a medium. Which of the following is not a medium for sound transmission? A. Air B. Water C. Vacuum D. Solid 相关知识点: 试题来源: 解析 C。文章中提到声音通过介质传播,真空不能传播声音。选项 A 空气、选项 B 水、选项 D 固体都是...
Yes, the speed of light is always a constant. But it slows down whenever it travels through a medium like air or water. How does this work? There are a few different ways to present an answer to this question, depending on whether you prefer a particle-like picture or a wave-like pic...
题目Sound travels through different mediums. In which medium does sound travel the fastest? A. Air B. Water C. Steel D. Wood 相关知识点: 试题来源: 解析 C。解析:声音通过不同的介质传播。在钢铁中声音传播得最快。选项 A 空气中声音传播速度比钢铁中慢;选项 B 水中声音传播速度也比钢铁中慢;...
Sound travels through the(媒介)of air.7. New York is a big商业的)city.8. After a year she had达到)her idealweight.9. What's the(程序) for opening a bank ac-count?10. It had largely replaced道德上的)judg-ments. 答案 【解析】6.medium7. commercial8.attained9. procedure10.moral ...
A particle A of unit mass travels horizontally through a viscous medium. When t = 0, the particle is at point O with initial speed u. The resistance on particle A due to the medium is kv2, where v is the velocity of the particle at time t and k is a positive constant.When t=0,...
C。选项 A“sound can't travel through anything”错误,题干表明声音可通过空气传播。选项 B“sound travels only through air”过于绝对,声音还可通过其他介质传播。选项 C“sound can travel through different mediums”符合,题干中声音通过空气传播,意味着声音可以通过不同介质传播。选项 D“sound travels fastes...
a自动失效 正在翻译,请等待...[translate] aQ2. What’s the principle behind the formation of mirages? Q2. 什么是原则在海市蜃楼的形成之后?[translate] aparticle systems 微粒系统[translate] aLight travels at the same speed through different mediums 光游遍以同一速度不同的媒介[translate]...
aparticle systems 微粒系统[translate] arpload to you tube rpload对您管[translate] a大学里有许多空闲时间 正在翻译,请等待...[translate] aLight travels at different speeds through different mediums 光游遍以不同的速度不同的媒介[translate]
百度试题 结果1 题目Light travels in straight lines ___ it is traveling in air medium. A. as much as B. as far as C. the same as D. as long as 相关知识点: 试题来源: 解析 D 反馈 收藏
23 Refraction takes place when light travels from medium A to air as shown.602medium A50.^air What is the critical angle for the above situation? B A 48 B 51^ C 55° D 60° 相关知识点: 试题来源: 解析 Bi= 30 ".r=40sinrsini s incsin 40”sin 30"sin cc = 51 反馈 收藏 ...