How much heat must be spent to heat a steel bolt weighing 0.2 kg at 30 degrees C?

We calculate the required heat for heating the steel bolt by the formula:

Q = C * m * Δt, where C is the specific heat capacity of steel (C = 500 J / (kg * K)), m is the mass of the steel bolt (m = 0.2 kg), Δt is the temperature change of the steel bolt (Δt = 30 ° C).

Q = C * m * Δt = 500 * 0.2 * 30 = 3000 J = 3 kJ.

Answer: To heat a steel bolt, you need to spend 3 kJ of heat.

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