asenath6477
26.09.2019 •
Physics
Microwaves have long wavelengths and extremely high frequencies and photon energy.
a. true
b. false
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Ответ:
it would be true since electronic waves can be produced by oscillations.
Ответ:
Explanation:
The absolute threshold of hearing is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the organism.