Physics in Every Day Life

1.Does hot water put out a fire faster than cold water?

Ans:Yes.When fire is caught if you sprinkle cold water,the water first absorbs heat from the flame and gets heated to boiling point.Then it absorbs heat further and becomes vapor.Once it is vaporized it occupies that region around the flame.Because of this,availability of oxygen around the flame will be reduced drastically and the fire will  put out.

Instead of cold water if hot water is sprinkled it vaporizes faster than cold water hence the fire will put out faster in this case.

2.What is Heat?

Ans:Heat is a form of energy,which gets transmitted between two bodies or two regions when they at at different temperatures.Heat always flows from a body at high temperature to a body at low temperature.


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