The initial and final temperature of water as recorded by an observer are `(40.6 pm 0.2)^(@)C` and `(78.3 pm 0.3)^(@)C`. Calculate the rise in temperature.

Explanation

Given `theta_(1)=(40.6+-0.2)^(@)C` and `theta_(2)=(78.3+-0.3)^(@)C`
Rise in temp. `theta=theta_(2)-theta_(1)=78.3-40.6=37.7^(@)C`.
`Deltatheta=+-(Deltatheta_(1)+Deltatheta_(2))=+-(0.2+0.3)=+-0.5^(@)C`
`therefore` rise in temperature `=(37.7+-0.5)^(@)C`