Internal Energy Internal Energy Definition#1: "The total energy contained in a system is called internal energy". Definition of internal energy …

Zeroth Law of Thermodynamics Zeroth law is the fundamental law of thermodynamics, but  it was discovered after the discovery of first and second law of t…

What is heat? In summer you drink cold water daily, in contrast, in winter you drink hot coffee. Why in hot you drink cold liquid and in cold you drink …