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slava [35]
3 years ago
11

a 120 volt,13 watts fluorescent light bulb is operated from 6pm until 10pm every day the cost per kilo watt hour is $0.07. what

does it cost to operate this light bulb for 30 days​
Engineering
1 answer:
Elina [12.6K]3 years ago
8 0
4*0.07=energy use per day(x)
(x)*30=energy use in thirty days (y)

Therefore
X=$0.28
Y=$8.4

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u = K/n = (2.9x10⁻⁵ * (0.4/15)) / 0.37 = 2.09x10⁻⁶m/s

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