Why are there different voltage and frequency used in the world?How many times during the year would the sun’s rays strike perpendicular (90° angle) at the following locations? Just put in a number for your answer.
a. Honolulu, Hawaii (latitude = 21°N) =
b. Phoenix, Arizona (latitude = 33.5°N) =
c. Sorocaba, Brazil (latitude = 23.5°S) =
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