Respuesta :
Answer:
100 kw bulbWe'll start by figuring out how much energy in
kilowatt-hours the light bulb uses per year. We multiply how much power it uses
in kilowatts, by the number of hours in a year. That gives 0.1 kW x 8,760 hours
or 876 kWh x 9 bulbs = 7884 kWh The electricity produced by 4 tons x 2460
kWh/ton = 9840 kwhSince the produced electricity is bigger so it
is enough
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Answer:
To produce 60 million kilowatts of electricity, 1.5 tons of uranium or 24,000 tons of oil is needed.
Explanation:
To solve this question we have to use cross-multiplication. One ton of uranium and 16,000 tons of oil both produce 40 million kilowatts of electricity, and we have to know how much uranium and oil would produce 60 million kilowatts of electricity, so:
-Uranium:
40,000,000 = 1
60,000,000 = X
(60,000,000 x 1) / 40,000,000 = X
1.5 = X
To produce 60 million kilowatts of electricity, 1.5 tons of uranium is needed.
-Oil:
40,000,000 = 16,000
60,000,000 = X
(60,000,000 x 16,000) / 40,000,000 = X
24,000 = X
To produce 60 million kilowatts of electricity, 24,000 tons of oil is needed.