The record time for a tour de france cyclist to ascend the 1100-m-high alpe d'huez is 37.5 min . the rider and his bike had a mass of 65 kg. at the average speed of the ride, the metabolic power to ride on level ground would be 700 w. to this, we must add the power to make the climb. what was his total metabolic power?

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?