1. a word or phrase supposed to have magic power; incantation. 2. a state or period of enchantment: living under a spell. 3. any dominating or irresistible influence; fascination: the spell of fine music.
IF a wave moving at a constant speed were to have it's wavelength doubled (Wavelength x 2), then the frequency of the wave would be half of what it originally was (Frequency / â¦ 2). 6 people found this useful. Al Cohen.
Answer: a. b. 68 Hz, the speed would change due to the different medium, and therefore the wavelength would change because frequency does not change when waves move through different medium. The frequency at which each individual particle vibrates is equal to the frequency at which the the source vibrates.