Question

what substance would this be and why?

(a) What is the speed of sound (in m/s) in a medium where a 191 kHz frequency produces a 0.136 cm wavelength 260 m/s (b) Which substance in this table is this likely to be? ---Select- oxygen + helium Add hydrogen ethanol vulcanized rubber Submi polyethylene 5. [-12 Poi marble OSUNIPHYS1 17.3.P.059. glass, Pyrex The w hower states that it produces noise at a level of 87.0 dB. What is this in W/m2? lead aluminum T steel Add Jay Rock - King's Dead (with Kendrick Lamar, Future & James Bl... UP2-V1-PR17a - 2020-PHY152- DO

Answer 1

(a)

v = frequency * wavelength

v = 191e3 * 0.136e-2

v = 260 m/s

________

(b)

we know speed of sound in carbon dioxide is 259 m/s

so,

it should be carbon dioxide