Question

Please help 20 points!

17. The frequency of a sound wave determines the_________
of the sound

18. The medium through which sound waves travel affects the__________
of the sound

19. Which person will experience what happens to sounds due to the Doppler effect? Two
friends riding bicycles side-by-side and talking; a father pushing a laughing toddler on a swing; a
boy sitting and watching television; a girl running and listening to her radio through earphones

21. Electromagnetic waves are produced by the vibration of an________field and a _______ filed together.

22. The electromagnetic spectrum is divided into regions by_______

23. What wave interaction occurs when waves combine and the resulting in a greater amplitude than the individual waves had?_______ interference.


24. What wave interaction occurs when waves combine and the resulting wave has a smaller amplitude than the individual waves had?__________interference

25. Whether an object is transparent, translucent, or opaque is determined by its ability to transmit light
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Answer 1

Apply this to waves: count the number of waves passing each second (= frequency), and multiply by the length of each (= wavelength) to find the speed. speed = distance/time = l/T= l / (1/f) = f λ. Work through three examples: A simple example, perhaps for sound in air, with values in Hz and m.

Explanation:Apply this to waves: count the number of waves passing each second (= frequency), and multiply by the length of each (= wavelength) to find the speed. speed = distance/time = l/T= l / (1/f) = f λ. Work through three examples: A simple example, perhaps for sound in air, with values in Hz and m.

Amplitude is the fluctuation or displacement of a wave from its mean value. With sound waves, it is the extent to which air particles are displaced, and this amplitude of sound or sound amplitude is experienced as the loudness of sound

But it seems that in some circumstances, sound can jump between objects in a vacuum after all. Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.