Which of the following cases (if any) requires the greatest amount of heat? (In each case the material is the same)
Correct answer: D. The amount of heat required is the same in each of the three previous cases
- A. 1.5 kg of the material is to be heated by 7.0 C0
- B. 3.0 kg of the material is to be heated by 3.5 C0
- C. 0.50 kg of the material is to be heated by 2 1 C0
- D. The amount of heat required is the same in each of the three previous cases
Explanation
Q=m x c x (change in temperature)Since the material is the same c does not change. Changing mass and temp by equal amounts also does not affect the value of Q.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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