Question

Сколько энергии выделяется при остывании от 70 градусов до 20 градусов кирпичной печи, сложенной из 500 кирпичей, если масса 1 кирпича ровна 1 кг

Answer 1

500*1=500 кг(m). 70-20=50 градусов С. 880 дж/кг*градус С-удельная теплоемкость (c). Q=c*m*градусы С. Q=880*50*500 Q=22 000 000 дж

Answer 2

Calculating Energy Released from Cooling Brick Oven

To calculate the energy released when a brick oven cools from 70 degrees Celsius to 20 degrees Celsius, we can use the formula:

Q = mcΔT

Where: - Q = energy released - m = mass of the object - c = specific heat capacity of the material - ΔT = change in temperature

Given: - Mass of 1 brick = 1 kg - Total number of bricks = 500 - Initial temperature = 70°C - Final temperature = 20°C

Calculation

Using the specific heat capacity of brick (c = 840 J/kg°C) - ΔT = 70°C - 20°C = 50°C - m = 500 kg (mass of 500 bricks)

We can calculate the energy released using the formula: Q = mcΔT

Q = 500 kg * 840 J/kg°C * 50°C = 21,000,000 J

So, the energy released when the brick oven cools from 70 degrees Celsius to 20 degrees Celsius is 21,000,000 joules.

This calculation assumes that the specific heat capacity of the brick remains constant over the temperature range.

I hope this helps! If you have further questions, feel free to ask.