【单选题】The tension on an anchor cable increases so that the angle of the catenary to the seabed at the anchor reaches 10°. How will this affect the anchor in sandy soil?
【简答题】One of the 63.5-cm-long strings of an ordinary guitar is tuned to produce the note (frequency 245 Hz) when vibrating in its fundamental mode. (a) Find the speed of transverse waves on this string. (b)...