To find the value of the mass of a heated piece of copper, we will use the formula: Q = Cm * m * (t – t0) and m = Q / (Cm * (t – t0)).
Variables and constants: Q – consumed amount of heat (Q = 16,000 kJ = 16 * 10 ^ 6 J); Cm – specific heat capacity of copper (Cm = 400 J / (kg * ºС)); t is the temperature of the piece after heating (t = 210 ºС); t0 – initial temperature (t0 = 10 ºC).
Calculation: m = Q / (Cm * (t – t0)) = m = 16 * 10 ^ 6 / (400 * (210 – 10)) = 200 kg.
Answer: A heated piece of copper has a mass of 200 kg.
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.