Which statement describes the energy transformation that occurs when a person eats a sandwich to gain energy for a long hike?
A. Thermal energy is transformed into potential energy.
B. Thermal energy is transformed into kinetic energy.
C. Kinetic energy is transformed into potential energy.
D. Potential energy is transformed into kinetic energy.
SUBMIT
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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?