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3241004551 [841]

2 years ago

8

You are considering purchasing a compact washing machine, and you have the following information: The Energy Guide claims an est

imated yearly electricity use of 350 kW-hrs, based on 8 loads of laundry being washed per week. The Energy Guide claims an estimated yearly operating cost of $38. This estimate is based on $0.1065 per kW-hr, and eight loads of laundry being washed per week. Local electricity costs $0.086 per kW-hr. You wash four loads of laundry per week. Based on this information, first calculate the energy that would be used by this compact washing machine in a year. Then calculate the yearly energy cost. a. $3.27 b. $19.00 c. $15.34 d. $178.40

1 answer:

RSB [31]2 years ago

8 0

Answer: $15.34

Explanation: see image below

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Solution :

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Change in temperature, $\Delta T = T_2-T_1$

$\Delta T = -2.43-87.745$

$\Delta T=-90.175^\circ F$

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$x_2=0.32198$

The final energy,

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