text: # What amount of heat will need to be transferred to the mercury thermometer when it is heated from room temperature
  
  What amount of heat will need to be transferred to the mercury thermometer when it is heated from room temperature t = 20 degrees to the body temperature of a healthy person (36.6)? Consider the mass of mercury equal to m = 2g. Will this amount of heat be equal to the amount of heat received by the thermometer during the temperature measurement?
  
  t1 = 20 ° C.
  
  t2 = 36.6 ° C.
  
  m = 2 g = 2 * 10 ^ -3 kg.
  
  C = 120 J / kg * ° C.
  
  Q -?
  
  The amount of thermal energy that goes into heating the mercury is determined by the formula: Q = C * m * (t2 – t1), where C is the specific heat of mercury, m is the mass of mercury, t2, t1 are the final and initial temperatures of mercury.
  
  Q = 120 J / kg * ° C * 2 * 10 ^ -3 kg * (36.6 ° C – 20 ° C) = 3.984 J.
  
  The thermometer received more heat from the body than was used to heat the mercury. Part of the heat was used to heat the thermometer itself.
  
  Answer: it took Q = 3.984 J of thermal energy to heat the mercury.
  
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