Physics, 25.01.2020 03:31 Heavengunn15
Auniversity campus has 200 classrooms and 400 faculty offices. the classrooms are equipped with 12 fluorescent tubes, each consuming 110 w, including the electricity used by the ballasts. the faculty offices, on average, have half as many tubes. the campus is open 240 days a year. the classrooms and faculty offices are not occupied for an average of 4 h a day, but the lights are kept on. if the unit cost of electricity is $0.115/kwh, determine how much the campus will save a year if the lights in the classrooms and faculty offices are turned off during unoccupied periods.
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Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to
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Auniversity campus has 200 classrooms and 400 faculty offices. the classrooms are equipped with 12 f...
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