How long would it take for a car to travel 200 km if it has an average speed of 55 km hr?

Properties seen when one one substance changes to another are known as properties

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

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?