A 5 kg block of copper (specific heat capacity = 385 J/kg°C) at 20°C is given
46,200 J of energy. What will be its final temperature?

Explanation:

When heat energy is supplied to a substance, its temperature increases according to the equation:

where

Q is the energy supplied

m is the mass of the substance

C is the specific heat capacity

is the increase in temperature

For the block of copper in this problem:

m = 5 kg

C = 385 J/kg°C

Q = 46,200 J

Therefore, the increase in temperature is

And since the initial temperature is 20°C, the final temperature will be

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