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 33.0 g, a specific heat capacity of c = 804 j/(kg c°), and a temperature of 15.4 °c. it is immersed in 149 g of water, and the final temperature of the water and thermometer is 56.0 °c. what was the temperature of the water in degrees celsius before the insertion of the thermometer?

Answer : The temperature of water is,

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 = 33.0 g

= mass of water = 149 g

= final temperature =

= initial temperature of thermometer =

= initial temperature of water = ?

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

Therefore, the temperature of water is,

thermal energy is the answer

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.