Question

If two brealer (A and B) 50 ml water of about 70*C each taken Thenbin breaker A 50 ml of water of about 30*C os added and after 5 minutes in vreaker B 50 ml of water of about 30*C os added What would observed if the temperatures of both beaker recorded immediately ?Why?
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Answer 1

Answer:

In A since the temperature of water will get down immediately after adding water at 30°C, the difference in temperature between the water in A to the atmosphere is less so heat transfer rate between the beaker A and atmosphere will reduce.

Whereas in case of beaker B, the temperature is higher for five minutes so the heat transfer rate from B will be high and then 30°C water is added which reduces the temperature further.

So after 5 minutes temperature of B will be less than A.