How many years would it take the atlantic ocean to grow 500 centimeters

The Atlantic Ocean widens by  2.5 centimeters every year. So, It will take  200 years for the Atlantic Ocean to grow by 500 centimeters.

doctors i believe if i'm wrong sorry

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.