Five hundred million years ago, basaltic lava flowed in an area now known as monticello, the historic home of thomas jefferson. some of this rock has since re-crystallized under intense heat and pressure and then has been eroded by wind and rain. the order of the rock cycle in this case is best described as

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?