A liquid has mass m and specific heat capacity c. The rate of change in temperature of the liquid is R. What is the rate at which heat is transferred from the liquid?
Correct answer: A. Rmc
- A. Rmc
- B. R/me
- C. me/R
- D. Rm/c
Explanation
We know that Q = mcΔTDividing both sides of the equation by time gives:Q/t = mcΔT/tQ/t = rate of heat transferΔT/t = RTherefore: rate of heat transfer = mcR = Rmc
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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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