Physics, 11.05.2021 14:00, matthew6889
Oilbirds are nocturnal birds. As they fly, they produce a high-pitched clicking sound to locate obstacles
using a pulse-echo technique.
(a) Describe how the oilbirds use the pulse-echo technique to locate obstacles. Answered.
(b) The frequency of sound in an oilbird'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-1
?
Answers: 3
Physics, 23.06.2019 02:30, edailey4448
Aswimmer is determined to cross a river that flows due south with a strong current. initially, the swimmer is on the west bank desiring to reach a camp directly across the river on the opposite bank. in which direction shoud the swimmer head? a. the swimmer should swim southeast. b. the swimmer should swim south. c. the swimmer shuold swim northeast. d. the swimmer should swim due north. e. the swimmer should swim due east.
Answers: 2
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