Why are antennas needed for radio television and cell phone transmission
A) without a long antenna, the signal will not travel very far
b) the antenna allows you to direct your signal toward the intended target
c )the sound waves require a meatal surface to bounce off
d) EM waves are created by oscillating electrons within the antenna
Answers: 1
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If element x has 99 protons how many electrons does it have
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Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
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Why are antennas needed for radio television and cell phone transmission
A) without a long antenna...
Mathematics, 11.03.2021 19:20
Mathematics, 11.03.2021 19:20