Answers

2016-01-21T19:39:18+05:30
V=wavelength/time
340=v/0.1
v=340*0.1
(v)wavlength=34meters
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2016-01-21T19:45:17+05:30
Time period T=1÷frequency
therefore    0.1=1÷frequency
                   frequency=1÷0.1=10Hz
v=340m/s

                   speed,v=frequency × wavelength
therefore    340m/s=10 × wavelength
                   340m/s÷10=wavelength      
                                                                    34m=wavelength
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