P. 4286. Waves are generated from a wave source, (the phase angle is zero when they are started.) and they travel along a straight line at a speed of 1 m/s. When a point, in the wave, has zero displacement, the closest point which has the maximim displacement is at a distance of 1 m.
a) Find the wavelength and the frequency.
b) What is the distance between those points whose phase difference is 270o?
c) Measured from the initiation of the waves, when will the phase of the point 5 m from the wave-source first be 180o?
Deadline expired on 10 December 2010.
Google Translation (Sorry, the solution is published in Hungarian only.)
Megoldás. \(\displaystyle a)\) A hullámhossz 4 m, a frekvencia 0,25 Hz;
\(\displaystyle b)\) 1 méternyire;
\(\displaystyle c)\) 7 másodperc múlva.