An underwater beacon on a shipwreck emits sound with a frequency of 750 Hz. The sound travels through the seawater and into the steel hull of a salvage ship, where its speed is 6000 m/s.
Which gives the wavelength of the sound in the steel hull and the time the beacon takes to emit 150 complete oscillations?
0.13 m0.13\ \mathrm{m}0.13 m and 0.20 s0.20\ \mathrm{s}0.20 s
8.0 m8.0\ \mathrm{m}8.0 m and 5.0 s5.0\ \mathrm{s}5.0 s
8.0 m8.0\ \mathrm{m}8.0 m and 0.20 s0.20\ \mathrm{s}0.20 s
0.13 m0.13\ \mathrm{m}0.13 m and 5.0 s5.0\ \mathrm{s}5.0 s