Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

Which of the following situations would violate the second law of
thermodynamics?
A. A heat engine using heat to do work
B. A heat engine losing some energy as heat
C. A heat engine feeling cold after running for an hour
D. A heat pump being 80% efficient