Final answer:
The power required for a freezer to produce a 3.5-kW cooling effect with a COP of 1.3 is approximately 2.7 kW.
Step-by-step explanation:
To determine the amount of power required for a food freezer to produce a 3.5-kW cooling effect with a coefficient of performance (COP) of 1.3, we use the relationship between the COP and the power input (Pin put): COP = Qc / Pin put
Where Qc is the cooling effect (in kW) and Pin put is the power input (also in kW). We can rearrange this formula to solve for the power input:
Pin put = Qc / COP
Plugging in the values from the question, we get:
Pin put = 3.5 kW / 1.3
Pin put = 2.6923 kW
Therefore, the freezer will require approximately 2.7 kW of power for operation.