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Alisiya [41]
3 years ago
8

A refrigerator has a coefficient of performance equal to 4.00. The refrigerator takes in 110 J of energy from a cold reservoir i

n each cycle. (a) Find the work required in each cycle. J (b) Find the energy expelled to the hot reservoir. J
Physics
1 answer:
Helga [31]3 years ago
4 0

Answer:

The correct answer is:

(a) 27.5 Joules

(b) 141.5 Joules

Explanation:

Given:

Energy,

Q_c = 110 \ J

Coefficient of performance refrigerator,

Cop(refrig)=4

(a)

As we know,

⇒ Cop(refrig) = \frac{Q_c}{Work}

or,

⇒ Work=\frac{Q_c}{Cop(refrig)}

              =\frac{110}{4}

              =27.5 \ Joules

(b)

⇒ Heat \ expelled = Heat \ removed +Work \ done

or,

⇒ Q_h = Q_c+Work

         =114+27.5

         =141.5 \ Joules

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