ANALOGY: As yet another blizzard hits, your favorite 7 grade science teacher cranks up his snow blower and sets out to clear his sidewalk. Suddenly, he realizes that using the snow blower
is a lot like electricity! He throws away his "shopping cart" analogy and comes up with this
comparison: If the snow blower is electricity, then:

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in