The amplitude of a surface wave for which \(\lambda=0.050 \mathrm{~m}\) is \(5.0 \mathrm{~mm}\) at a distance of \(1.0 \mathrm{~m}\) from a point source. What is the amplitude of the wave 

(a) 10 m from the source and

(b) \(100 \mathrm{~m}\) from the source? During a time interval equal to 100 periods, by what percentage does the amplitude of a wavefront decrease \((c)\) after the wavefront passes a position \(1.0 \mathrm{~m}\) from the source and

(d) after it passes a position \(100 \mathrm{~m}\) from the source?