Question

the temperature inside a room is 70F. a termometer has been placed outside of the room, in 5 minutes it reads 60F. 5 minutes later it reads 55F. what is the temperature outside the room.

Answer 1

We can use Newton's law of cooling formula

we are given

In first 5 minutes:

t=5

now, we can plug values

After 5 minutes:

t=5

now, we can plug values

we can divide both equations

and we get

now, we can solve for To

F...........Answer