7 A sound wave is a longitudinal wave.Fig. 7.1 shows a spring being used to demonstrate a longitudinal wave.spring direction of wave travel coils Fig.7.1(a) The coils of the spring vibrate.Draw two arrows on Fig. 7.1 to show the directions of the vibrations.[2](b) Through which of ...
8 Sound travels as a wave.(a) Complete each sentence.Sound is produced when an object ...vibrates...An echo is produced when sound is ... reflected... from a hard surface.Compared with a quiet sound, a loud sound always has a greater ...amplitude Compared with a high pitched sound...
The pattern of the disturbance creates outward movement in a wave pattern, like sea water in the ocean. The wave carries the sound energy through the medium, usually in all directions and less intensely as it moves farther from the source. The idea that sound moves in waves goes back to, ...
A sound wave may be considered either as a displacement wave or as a p... 01:55 A string of length L, fixed at its both ends is vibrating in its 1^(st... 02:10 A string of length L, fixed at its both ends is vibrating in its 1^(st... 02:10 In the figure shown a sinu...
28. The finding of the study can be best described as ___ according to the first paragraph. A. a widely accepted belief. B. something surprising. C. a wholly resisted opinion. D. something still in debate. 29. ...
6 (a)Fig. 6.1 represents the waveform of a sound wave. The wave is travelling at constant speed.displacement of particles distance along wave Fig.6.1(i) On Fig. 6.1,1. label with the letter X the marked distance corresponding to the amplitude of the wave,[1]2. label with the letter ...
结果1 题目 2 B. A sound wave is displayed on the screen of a cathode-ray oscilloscope, as shown The time-base setting is 0.50 ms per division.What is the frequency of the sound wave? A 250 Hz B 500 Hz C 670 Hz D 1300 Hz 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
Shock Wave InteractionSound TransmissionAbsorptivityDegrees Of FreedomRelaxation (MechanicsShock FrontsIt was shown in [1鈥 4] that the reflection of a sound wave or its transmission through a shock front should be accompanied by attenuation or intensification of the wave is regarded as a ...
声波(sound wave)作为A-level物理知识点,让我们知道,声波是一种纵波,他在传播的时候振动的方向和传播的方向是平行的,那超声波产生的条件又是什么呢? 条件有二,其一要有高频的声源,其二是要有传播超声的介质,在固体中,超声振动可以以纵波的形式传播,也可以以横波的形式传播,但是在气体或者是液体中,因为戒指没有切...
Dupin is asked to find a stolen letter which is being used to blackmail a wealthy lady. The appearance of the letter is described in detail, along with the suspected culprit and the elaborate methods the police used to se...