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Which are electromagnetic waves? Check all that apply.
Which order shows decreasing wavelength?
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Which part of visible light transfers the most energy?
An infrared wave traveling through a vacuum has a frequency of 4.0 × 1014 Hz. What is the wave’s wavelength?
Explain why the speed of light is lower than 3.0 × 108 m/s as it goes through different media.
In a vacuum, there are no atoms or particles that interfere with the path of light. However, in other media, the speed of light is lower than 3.0 × 108 m/s because the wave is continuously absorbed and re-emitted by each atom in its path. The differences in speed are due to the composition of the medium and the density of the particles in the medium.
When caring for wounds, doctors need to make sure wounds are not infected by bacteria. Which electromagnetic wave would doctors most likely use for this purpose?
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