1. Show that a certain 1.2-m-long wave with a frequency of 2.5 Hz has a wave speed of 3.0 m/s. 2. A tuning fork produces a sound with a frequency of 256 Hz and a wavelength in air of 1.33 m. Show that...

1. Show that a certain 1.2-m-long wave with a frequency of 2.5 Hz has a wave speed of 3.0 m/s.

2. A tuning fork produces a sound with a frequency of 256 Hz and a wavelength in air of 1.33 m. Show that the speed of sound in the vicinity of the fork is 340 m/s.