That is why the sound of an approaching train can be heard in the steelrails long before its being heard through the air.相关知识点: 试题来源: 解析 声音在钢铁中传播速度比空气中快 题目需要解释为何火车接近时,通过铁轨能比空气更早听见声音。首先分析声速差异:钢铁(固体)中的声速约为5000m/s,...
3. Why did the writer feel nervous when she heard a sound behind her? 相关知识点: 试题来源: 解析 Because she turned quickly, but found the street was empty.根据 “I turned quickly, half expecting to see someone with a knife or a gun. The street was empty.”答 ...
If one puts ones ears to the steel rail, the sound of a coming train can be heard even when the train cannot be seen. One can conclude from this observation that (1) sound travels faster in steel than in air. (2) amplitude of sound in the rail is much larger than in air. ...
Why Sound of Murray Is Still to Be Heard at 1.2m DecibelsRead the full-text online article and more details about "Why Sound of Murray Is Still to Be Heard at 1.2m Decibels" by Wooldridge, Ian - Daily Mail (London), November 24, 2001By WooldridgeIan...
Bose hasn’t taken advantage of the Ultra Open Earbuds’ head-tracking option, which they use to deliver Bose’s Immersive Audio feature. When using the buds normally (with your phone for music) Immersive Audio can keep the position of the virtual speakers fixed in space as you move your ...
That is why they don't hear your voice the same as you do. (1) You ___ hear your voice the way others hear it. [ ] A . can't B . seldom C . sometimes D . always (2) Sound travels in the form of ___. [ ] A . bones B . air C . waves D . voice ...
The speed of a sound wave will be higher through that medium of higher density, as sound will be highest in media, as more and/or densely-packed...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
sometimes I'm goofy. And my music is all of those things as well. I want songs that match whatever personality I'm feeling and whatever mindset I'm in," she says. "R&B doesn't have to be love-focused all the time. I think R&B can be very flexible. That's been my goal when...
Berean Standard BibleSo when Ahijah heard the sound of her feet entering the door, he said, “Come in, wife of Jeroboam! Why are you disguised? For I have been sent to you with bad news.King James BibleAnd it was so, when Ahijah heard the sound of her feet, as she came in at ...
Have you ever heard your own voice?“Of course,” you say.Has anyone else ever heard your voice?Again you say,“Of course.”But that’s not quite true.Nobody else has ever heard your voice—the way you hear it.When you talk,you set up sound waves (声波).The air outside your ...