An escalator carries you from one level to the next in an airport terminal. The upper level is 4.6 m above the lower level, and the length of the escalator is 7.4 m . Assume that your mass is 64 kg . How much work does the up escalator do on you when you ride it from the lower level to the upper level?
How much work does the down escalator do on you when you ride it from the upper level to the lower level?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281