Hot and Cold Bodies When we rub our hands for some time, they become warm. When a block slides on a rough surface, it becomes warm. Press against a rapidly spinning wheel. The wheel slows down and becomes warm. While … Continued
Important Terms and Definitions 1. System: A portion of universe which is under investigation, e.g., portion of test tube where reaction is taking place, is called system. Last Updated: Friday, October 23, 2009
Introduction It is important to note that thermodynamics is concerned only with energy changes accompanying a given process (physical or chemical) and not with the total energy of the body. Further chemical thermodynamics is that branch of thermodynamics which deals … Continued
INTRODUCTION TO METAL CUTTING: Metal cutting is the process of producing a job by removing a layer of unwanted material from a given workpiece. Fig. shows the schematics of a typical metal cutting process in which a wedge shaped, sharp … Continued