Chemistry, 11.07.2019 22:00 natalie2sheffield
Na certain city, electricity costs $0.18 per kw·h. what is the annual cost for electricity to power a lamp-post for 6.50 hours per day with (a) a 100.-watt incandescent light bulb (b) an energy efficient 25-watt fluorescent bulb that produces the same amount of light? assume 1 year = 365 days.
Answers: 2
. So,
= 
:
$ 
= $
:
$ 
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