MTEL Technology and Engineering

Correct Response: A. The frequency of a wave is measured on Hz, or cycles per second, and is the reciprocal of the period, which is measured in seconds. Therefore, the frequency of the wave is 1/30 s = 0.033 Hz. Choice B comes from converting 30 seconds to 0.50 minutes. Choice C comes from converting 30 seconds to 0.5 minutes and matching the order of magnitude of the frequency. Choice D comes from converting 30 seconds to 0.50 minutes, and matching to the order of magnitude of the period.