PHYS 050 Chapter Notes - Chapter 1: Thermodynamics, Kilowatt Hour, Heat Transfer
Document Summary
Speciic latent heat of fusion (lf): the energy it takes to chagne the phase of a substance from solid to liquid. Speciic latent heat of vaporizaion (lv): the transformaion of liquid to gas. Eiciency ( ): proporion of energy used for what it is actually intended. Wat (w): mks unit of power [1 w = 1 j/s] Energy resource: a form of energy that can be useful to human. Renewable resource: energy resource that can always be replenished (wind, water, geothermal, biomass and solar) Non-renewable resource: energy resource that can"t be renew (nuclear, oil, natural gasa and coal) Kilowat hour (kwh): unit of energy common in electricity meters [1 kwh = 1000. Joule (j): mks unit for energy (1j = 1nm) Calorie (c): 1000 calories is called a calorie (c) Potenial energy: energy due to posiion in a ield. Heat: changes in temperature on changes in phases of mater.
