11 Oilbirds are nocturnal birds. As they fly, they produce a high-pitched clicking sound to locate obstacles using a pulse-echo technique.(b) The frequency of sound in an oilhird's click is 2.0 kHz and a click is 2.0 ms in duration. Determine whether these clicks can be used to locate obstacles at a distance of 50 cm. speed of sound = 330 m s"