1) which of the following would not be considered a mechanical wave? (1 point) a) surface wave on the ocean b) radio wave transmitted from a satellite c) standing wave on a guitar string d) sound wave in a pipe organ2) which of the following would be considered a medium? (1 point) a) a block of wood b) a pool of water c) a container of carbon dioxide d) all of the above3)a wave of wavelength 42 cm travels with frequency 23 hz. what is the speed of the wave? (1 point) a) 0.01 m/s b) 54.7 m/s c) 9.66 m/s d) 96.6 m/s4)a 700.0-cm rope under a tension of 65.0 n is set into oscillation. the mass density of the rope is 90.0 g/cm. what is the frequency of the second overtone (n = 3)? (1 point) a) 0.018 hz b) 1.8 hz c) 0.18 hz d) 0.0018 hz