Agas water heater is 75% efficient. the energy output used to heat the water is 4.6 kwh. what is the energy input, rounded to the nearest tenth? 3.5 kwh 5.4 kwh 6.1 kwh 16.3 kwh

6.1kWh

Explanation:

The efficiency of a machine is defined as the extent to which the machine converts all inputs into the desired output, it is usually expressed as a percentage.

Hence in terms of energy, efficiency is given by;

where is the output energy and is the input energy.

Given;

We substitute into equation (1) to find the unknown.

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

where’s the list ? the question is incomplete