Question

A calorimeter of mass 0.2 kg and specific heat 900 J/kg-K.
Containing 0.5 kg of a liquid of specific heat 2400J /kg-
K. Its temperature falls from 60°C to 55°C in one minute.
Find the rate of cooling.
(a) 5 J/s
(b) 15 J/s
(c) 100 J/s
(d) 115 J/s​

Answer 1

I don't know sorry ask your teacher

Answer 2

Answer:

the correct option is d