If the wave being sent is transmitted via a sound wave explain how the digital signal would be perceived if the signal was sent using: Amplitude Modulation
&
Frequency Modulation

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Asimply means that over time there was some sort of change.

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?