Physics, 30.07.2021 04:10 rozlynnv22
The monthly (30 days) electric bill included the cost of running a central airconditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricity costs 8.0¢ per kWh?
a) $12.30
b) $21.30
c) $39.50
d) $31.20
e) $13.20
Answers: 1
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