Match the description
What is the phase shift for the sine wave with maximum ampltitue after 1/4 cycle. Give your numerical answer in degree.
Frequency of a signal is indepenedent of the medium.
What is the frequency of a singal that has a constant voltage level?
In Thailand, the frequency of power is 50 Hz. What is the period of the power for the lights at home? (Give your answer in milliseconds).
Wavelength is indepenedent of the medium.
Which one has the wider wavelength?
Human voice is
The alarm from an alarm system is normally
voice is