Answer:
80%
Explanation:
Thermal efficiency is a measure of the extent to which a heat engine is able to convert to other form. It is measure in percentage.
Thermal efficiency = [tex]\frac{E_{out} }{E_{in} }[/tex] × 100%
Where [tex]E_{in}[/tex] is the input energy and [tex]E_{out}[/tex] is the output energy.
Given that: [tex]E_{in}[/tex] = 2400 J and [tex]E_{out}[/tex] = 3000 J, therefore:
Thermal efficiency = [tex]\frac{2400}{3000}[/tex] × 100%
= 80%
The thermal efficiency of the engine is 80%.
