A household refrigerator with a coefficient of performance of 2.4 removes energy from the refrigerated space at a rate of 600 Bt
1 answer:
Answer:
$720
Step-by-step explanation:
Coefficient of performance of a refrigerator (COP) =
desired out i.e energy removed = 600Bth/hr
Required input=?
2.4=
required input==25Btu/hr
cost of electricity per hour = $0.08
cost of electricity for 360 hours =$0.08×360=$28.8
for an input of 25Btu/hr and 360 hours
∴cost of electricity in month =$28.8×25=$720
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Answer:
A, C, D, F
Step-by-step explanation:
Given the expression : (3/5)³
Recall :
a^b where, a = base ; b = exponent
In ; (3/5)^3
Base = 3/5 ; exponent = 3
Similarly ;
a^b = a in b places
(3/5)^3 = (3/5) * (3/5) * (3/5)
(3/5) * (3/5) * (3/5) = (3*3*3) / (5*5*5) = 27/125
Hence, A, C, D and F are all correct
