Physics help?
number1toolfool asked: A particular household uses a 1.2-kW heater 3.0 h/day (“on” time), four 1.00E2-W lightbulbs 6.0 h/day, a 3.4-kW electric stove element for a total of 2.3 h/day, and miscellaneous power amounting to 1.6 kWh/day.
A.If electricity costs $0.120 per kWh, what will be their monthly bill (3.0E1 days)?
B.How much coal (which produces 7.0E3 kcal/kg) [...]