- #1
dan4loriel
- 8
- 0
Homework Statement
please i need help as have been trying to solve this question: A body cools from 70°C to 50°C in 6mins when the temp of the surrounding is 30°C. what wil be the tempt of the body after another 12mins if the cooling obeys Newtons law of cooling
equation:
dq/dt = -k(θ-θs)
where m- mass of the body
c-specific heat capacity of the body
θ-temp of the body
θs-temp of the surrounding or room
The Attempt at a Solution
i tried sovling it as follows:
dq=mc(70-50)
=20mc
dq/dt= 20mc/6= -k(70-50) =-20k
dq=mc(50-θs)
dq-dt=mc(50-θs)/12=-k
got lost from here please help!