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Heat Capacity Questions

   1. What are the units for specific heat capacity?

 

   2. Iron has a specific heat capacity of 460 J/kg/°C. How much energy would be needed to increase the temperature of 1 kg iron by 1°C?

 

   3. How hot does a 3.5 kg brick get if it’s heated from 20°C by 20,000 J (20 kJ)?

 

   4. What happens to the molecules in a liquid as it gets hotter?

 

   5. What happens to the molecules in a solid as it gets hotter?

 

   6. How much energy will it take to raise 3 kg of water by 5°C? (water has a specific heat capacity of 4,200 J/kg°C)

 

   7.  How much energy will a 30 W heater provide in 5 minutes?

 

   8.  How much thermal energy does a 2 kg steel block (c = 450 J/kg°C) lose when it cools from 300°C to 20°C?

 

   9.  The specific heat capacity of copper is 390 J/kg/°C. How much energy would it take to raise the temperature of 3.5 kg copper by 12°C?

 

   10. The specific heat capacity of copper is 390 J/kg/°C. How much energy would it take to raise the temperature of 42 kg copper by 71°C?