3 kg of dry firewood and 2 kg of coal were burned in the furnace. How much heat is generated in the oven?
| February 9, 2021 | education
mdr = 3 kg.
mу = 2 kg.
qdr = 1 * 10 ^ 7 J / kg.
qу = 2.7 * 10 ^ 7 J / kg.
Q -?
Q = qdr * mdr + qу * mу.
Q = 3 kg * 1 * 10 ^ 7 J / kg + 2 kg * 2.7 * 10 ^ 7 J / kg = 8.4 * 10 ^ 7 J.
Answer: Q = 8.4 * 10 ^ 7 J of thermal energy was released in the furnace.
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