Power is an intensive variable (J/s)....Energy is an extensive variable (J). Temperature is intensive (K)..............Heat is extensive (J). Speed is intensive (m/s)....................Distance is extensive (m). Density if intensive (kg/m^3.............Mass is extensive (kg). Rate of flow is intensive (kg/s)..........Accumulated flow is extensive (kg). Rate of snow fall is intensive (mm/s) Accumulated snow depth is extensive (m). All rates are intensive........................Accumulations are extensive. Intensive variables are never "consumed."
---- Original message ---- >Date: Thu, 13 Jan 2011 08:15:49 -0800 (PST) >From: "John M. Steele" <[email protected]> >Subject: Re: [USMA:49492] Re: Screen size conundrum >To: [email protected], "U.S. Metric Association" <[email protected]> > John states: I will argue that power is consumed (and wasted). Mechtly counters: Rates are never "consumed." John states: > I will further argue that speed consumes gasoline. > The amount of gasoline to go a given distance varies > with speed. Mechtly agrees with these two indisputable statements. > For electrical energy usage, it makes a lot of sense to > look at instantaneous power (which is consumed... Mechtly claims this statement is nonsense.
