jkjjoijjm8677 jkjjoijjm8677 27-02-2024 Physics contestada How many 40-mW, 60-lm/W fluorescent lamps would be needed to provide an illuminance of 250 lm/m² on a factory floor of area 25 m times 30 m? Assume the lights are 10 m above the floor and that half their flux reaches the floor.
