## 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

Question

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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5 months 2021-09-01T10:48:54+00:00 2 Answers 0 views 0

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

a) 13.2kWh

b) 118800 cents

Explanation:

(a) To find the energy consumed during one month you use the following formula: (1)

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