Question

Which option below best explains why the second law of thermodynamics isnot violated when the hood of a car gets hot while the car is moving?A. Only part of the heat generated by combustion can be used aswork, and the rest is released as heat to the environment.B. The car is not an isolated system, since energy and matter flow inand out freely, so the second law does not applyC. Energy is neither created nor destroyed in the process, but it doeschange from chemical to thermal energy.D. Work is being done to move the heat from the running engine tothe hood of the car.

Answer 1

The second law of thermodynamics is not violated when the hood of a car gets hot while the car is moving because only part of the heat generated by combustion can be used as work, and the rest is released as heat to the environment.

Step-by-step explanation:

The best explanation for why the second law of thermodynamics is not violated when the hood of a car gets hot while the car is moving is option A. Only part of the heat generated by combustion can be used as work, and the rest is released as heat to the environment. The second law of thermodynamics states that heat transfer occurs spontaneously from higher to lower temperature bodies but never spontaneously in the reverse direction. In the case of a car engine, only a portion of the heat generated can be converted into useful work to move the car, while the remaining heat is released to the environment, causing the hood to get hot.