The heat output of a particular engine is 7.5 ×10^3 J per cycle, and the net work out is 4.0 ×1

step 1 given heat thrown to the cold desert word by heat engine is equal to 7 .5 multiply by 10 power 3

The heat output of a particular engine is 7.5 ×10^3 J per...

The heat output of a particular engine is $7.5 \times 10^{3} \mathrm{~J}$ per cycle, and the net work out is $4.0 \times 10^{3} \mathrm{~J}$ per cycle. (a) The heat input is (1) less than $4.0 \times 10^{3} \mathrm{~J},$ (2) between $4.0 \times 10^{3} \mathrm{~J}$ and $7.5 \times 10^{3} \mathrm{~J},$ (3) greater than $7.5 \times 10^{3} \mathrm{~J}$ Explain. (b) What is the heat input and thermal efficiency of the engine?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Thermal Efficiency

Thermal efficiency is the ratio of the net work output of an engine to the heat input. It quantifies how effectively an engine converts heat into work and is crucial for evaluating the performance of heat engines.

Energy Balance in Cyclic Processes

In cyclic processes, a system returns to its initial state after a complete cycle, implying that the net change in internal energy is zero. This means that the total heat added to the system is exactly balanced by the total work done by the system and the heat expelled, reflecting the key principle of energy conservation in a cyclical engine operation.

First Law of Thermodynamics

This principle states that energy is conserved, meaning that the energy entering a system must equal the energy leaving it plus any changes in the system's internal energy. In heat engines, the heat input is partly converted into work and the remainder is expelled as waste heat, emphasizing the need to account for all energy exchanges.

Transcript

Please give Ace some feedback