Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. however, if a significant amount of heat flows from the object to the thermometer, the temperature will change. a thermometer has a mass of 30.3 g, a specific heat capacity of c = 827 j/(kg c°), and a temperature of 11.9 °c. it is immersed in 128 g of water, and the final temperature of the water and thermometer is 41.8 °c. what was the temperature of the water in degrees celsius before the insertion of the thermometer?

Answer : The initial temperature of the water was

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

where,

= specific heat of thermometer =

= specific heat of water =

= mass of thermometer = 30.3 g

= mass of water = 128 g

= final temperature of water and thermometer =

= initial temperature of thermometer =

= initial temperature of water = ?

Now put all the given values in the above formula, we get:

Therefore, the initial temperature of the water was

108

explanation:

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a is the correct answer