Radio waves travel at 3.00 · 108 m/s. calculate the wavelength of a radio wave of frequency 900 khz. (9.00 · 105 hz.)

m

2.70 x 1014
3.70 x 10-15
3.33 x 102
3.00 x 10-3

Arope has one end tied to a vertical support. you hold the other end so that the rope is horizontal. if you move the end of the rope back and forth with a frequency of 4 hz, the transverse wave you produce has a wavelength of 0.5 m. what is the speed of the wave in the rope?