An electromagnet wave has a wavelengths of 9.4e2 m which can also be written as 9.4x10^2 m. what is the frequency of this wave? what type of wave is this?

ill do it for 100, also this isnt 80 its 40

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."