Question

thermometer reading 5 degree celsius is brought into a room whose temperature is 22 degree Celsius one minute later the thermometer reading is 12 degree Celsius how long does it take until the reading is 21.9 degree Celsius

Answer 1

Answer:

Final equation is not defined for the temperature of Thermometer 22°c

Thus in order to find the solution we put

T tends to 22

T------------>22

Say 21.9°C

Answer 2

Answer:

The time taken by thermometer to reach the temperature reading of 21.9°C is found to be 2 minutes 24.8 seconds.

Step-by-step explanation:

The initial reading of the thermometer is given to us as: 5 °C

The Temperature reading of thermometer one minute later: 12 °C

Change in reading of thermometer in one minute: (12-5) °C = 7 °C

The final reading we want on the thermometer: 21.9 °C

Change in temperature reading required to reach the final value:

(21.9-5) °C = 16.9 °C

Now, the time required for the thermometer to change the reading by 7 °C: 60 seconds (as 1 minute = 60 seconds)

Then, the time required by thermometer to change the reading by 1 °C:

$\frac{60}{7}$ seconds

Hence, the time required by the thermometer to change the reading by 16.9 °C:

$\frac{60}{7}\times 16.9 = 144.85$  seconds

or we can say in minutes:

2 minutes 24.8 seconds

So, the time taken by thermometer to reach the reading of 21.9°C is found to be 2 minutes 24.8 seconds.