# MEL302 : Heat Transfer - Lec 03 ###### tags: 'MEL302' `Heat Transfer` `Mechanical Engineering` [TOC] # Notes ## Specific Heats of Gases, Liquids, and Solids ![](https://i.imgur.com/gxXm9qY.png) ![](https://i.imgur.com/fUx0DzG.png) ![](https://i.imgur.com/7Rs8ao2.png) ## Energy Transfer ![](https://i.imgur.com/CuxXOqO.png) ![](https://i.imgur.com/dNWYVE1.png) ![](https://i.imgur.com/Gr8ALjB.png) --- Q. Problem ![](https://i.imgur.com/p3J7nvG.png) Ans. surface area is wrong here - Given : ![](https://i.imgur.com/aMCSqph.png) - Solution : ![](https://i.imgur.com/gx5e5dL.png) ![](https://i.imgur.com/y432ROW.png) ![](https://i.imgur.com/nS75PTl.png) ## First Law of Thermodynamics ![](https://i.imgur.com/VXBTS4S.png) ![](https://i.imgur.com/rmzw8Rr.png) ![](https://i.imgur.com/uFUFyWg.png)