PHYS 1501Q Lecture Notes - Lecture 41: Angular Acceleration, Angular Velocity, Phase Diagram

• School: UConn
• Department: Physics
• Course: PHYS 1501Q
• Professor: Soroush Khosravi Dehaghi, Robert McCutcheon

Document Summary

Physics 1501q - lecture 41 - thermal physics . The si unit for temperature is kelvin (k) The energy needed to raise the temperature of a substance by 1k (or 1 c) The energy needed to raise the temperature of 1 kg of a substance by 1k (or 1 c) c = q/(m t) A piece of metal absorbs 2. 48 kj of heat, increasing its temperature by 25 c. (a) what is its heat capacity? (b) how much heat is required to increase its temperature by 200 c: c = q/ t. C = 2480/25 = 99. 2 j/k: q = c t. It takes heat to change the phase of a substance. Note: reverse processes (freezing, condensation) release heat. (source: slide 22 of 11/28 lecture slides) Sign is positive if you are adding energy into the system, negative if you are removing energy from the system (source: slide 25 of 11/28 lecture slides)