1 Kg of water (CP = 0.5 J/Kg^oC) is pumped to a height of 1 m, work done by the motor is 20 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 20^oC?
(a) 20^oC
(b) 30^oC
(c) 40^oC
(d) 50^oC
I have been asked this question in an interview for internship.
The query is from Application of the Energy Balance to Open Systems topic in division Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering