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Considera que en tu casa tienes un televisor de 110 W, si pasa encendido 4 horas diarias, Cuál será la energía consumida durante un mes (30
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Considera que en tu casa tienes un televisor de 110 W, si pasa encendido 4 horas diarias, Cuál será la energía consumida durante un mes (30 días). ¿Cuál es el costo de funcionamiento si el precio de kWh es de 9 centavos
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Physics
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2021-09-01T10:48:54+00:00
2021-09-01T10:48:54+00:00 2 Answers
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Answer:
E = 13.2 kWh
, Cost = $ 10.8
Explanation:
We can look for the consumed energy from the expression of the power
P = W / t
The work is equal to the variation of the kinetic energy, for which
P = E / t
E = P t
look for the energy consumed in one day and multiply by the days of the month in the month
E = 110 4 30
E = 13200 W h
E = 13.2 kWh
the cost of this energy is
Cost = 0.9 12
Cost = $ 10.8
Answer:
a) 13.2kWh
b) 118800 cents
Explanation:
(a) To find the energy consumed during one month you use the following formula:
E: energy consumed
P: power of the tv (energy consumed per hour) = 110 W
t: time
The tv is on for four hours per day. You first calculate the number of hours, in which the tv is on, for one month:
Then, the tv is on 120 h on a month.
Next, you replace the values of P ant t in the equation (1) for E:
(b) If the price for kWh is 9 cents you have for the tv:
hence, the cost of the energy consumed by the tv is 118800 cents in on month