I suggest you, as the first step, to start with a definition of an efficiency relation. Examples: efficiency=(total emitted energy)/(supply energy) efficiency=(emitted energy in a range of frequencies)/(supply energy) efficiency=(emitted energy in a range of frequencies and over a solid angle)/(supply energy)
Springdale, AR Lowest Regular Gas Prices Summary. There are 28 Regular gas price reports in the past 5 days in Springdale, AR. The average Regular gas price in Springdale, AR is $2.12, which is $0.29 lower than U.S. national average Regular gas price $2.41. The lowest Regular gas price is $2.05 of Murphy Express located at 7250 W Sunset Ave, Springdale, AR 72762.
the national average price of gas ended the month of january about four cents cheaper than it began as many people curtailed driving due to extreme cold weather and icy road conditions today s national average is $ 3 28 per gallonhe average price of gas in january was $ 3 30 per gallon which was about two cents less than a year ago and the least expensive for the month since 2011