Chapter 13. Propagation speed, frequency, and wavelength of a wave (13-2)

Question

nNgMT5//s46neYnn+utjhZDEBg2i2mj2lPfZBeJc/Ec=
{"title":"Propagation speed of a wave","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"rect\",\"coords\":\"1,24,29,53\"}]"} {"title":"Wavelength","description":"Incorrect","type":"incorrect","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"138,3,173,57\"}]"} {"title":"Frequency","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"112,6,142,66\"}]"}

Question

TJnnWsyBCHsqZ81xB2cQzA==
{"title":"Propagation speed of a wave","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"rect\",\"coords\":\"1,24,29,53\"}]"} {"title":"Wavelength","description":"Correct!","type":"correct","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"138,3,173,57\"}]"} {"title":"Frequency","description":"Wrong","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"112,6,142,66\"}]"}

Question

6AjRK1rC+/08Tcq8CY6Akw==
{"title":"Propagation speed of a wave","description":"Wrong","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"rect\",\"coords\":\"1,24,29,53\"}]"} {"title":"Wavelength","description":"Incorrect","type":"incorrect","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"138,3,173,57\"}]"} {"title":"Frequency","description":"Correct!","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"112,6,142,66\"}]"}

Review

Figure 13-7 also shows something remarkable about waves: \(\textit{During the time that it takes an individual piece of the medium to complete one cycle of oscillation, the wave travels a distance of one wavelength through the medium}\). We can use this observation to relate the wavelength and frequency to the \(\textit{speed}\) of the wave. Since the wave travels a distance \(\lambda\) in a time \(T\), the \(\textbf{propagation speed}\) \(v_{\mathrm{p}}\) of the wave is