spulgarinh12 spulgarinh12

12-08-2022
Physics

contestada

NEED HELP PLEASE ASAP
The energy output of a fan is 36 kWh. The fan is 75% efficient.
How much energy is lost to the surroundings?

12 kWh
36 kWh
48 kWh
84 kWh

Respuesta :

noorsyaza2708 noorsyaza2708

12-08-2022

12 kWh.

The input energy = 36kWh divide by 0.75 = 48kWh

The lost energy = 0.25 x 48kWh = 12kWh

because 25% of input energy is lost to the surrounding.

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