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.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.