The temperature of the oven is 200°F
<u>Explanation:</u>
Given-
We have to apply Newton's law of cooling or heating
On Integrating both sides, we get
On putting the value,
T(0) = 65°F
After 1/2 minute, thermometer reads 110°F. So,
- 1
After 1 minute, thermometer reads 140°F. So,
- 2
Dividing equation 2 by 1:
- 3
From 1 we have,
Putting this vale in eqn 3. We get,
Therefore, the temperature of the oven is 200°F