Physics, 07.03.2020 04:48 jewlbug4358
A particular household uses a 2.2-kW heater 1.5 h/day ("on" time), four 75-W lightbulbs 5.0 h/day , a 2.5-kW electric stove element for a total of 1.0 h/day , and miscellaneous power amounting to 2.3 kWh/day.
a. If electricity costs $0.105 per kWh, what will be their monthly bill (30 days)?
b. How much coal (which produces 7500 kcal/kg) must be burned by a 37 % -efficient power plant to provide the yearly needs of this household?
Answers: 3
Physics, 22.06.2019 16:00
Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation
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Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
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Physics, 22.06.2019 22:00
Aviolently rotating column of air is formed around a region of extremely low air pressure above land. which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane
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A particular household uses a 2.2-kW heater 1.5 h/day ("on" time), four 75-W lightbulbs 5.0 h/day ,...
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