Question

Какое количество теплоты отдаст кирпичная печь массой 350 кг,если при остывании температура снизилась до 50 градусов по цельсию.

Answer 1

Q= m*c*(t2-t1)

нужно узнать удельную теплоемкость

0,84... 1,26 кДж/(кг °С)

Все зависит от кирпича из какого материала он сделан

возьмем крайние значения

Q1= 350*0.84*50=14700Кдж

Q1= 350*1.26*50=22050Кдж

 

 

Answer 2

Calculation of Heat Released by a Brick Stove

To calculate the amount of heat released by a brick stove, we need to use the formula:

Q = mcΔT

Where: - Q is the heat released (in joules) - m is the mass of the stove (in kilograms) - c is the specific heat capacity of the material (in joules per kilogram per degree Celsius) - ΔT is the change in temperature (in degrees Celsius)

In this case, we are given that the mass of the brick stove is 350 kg and the temperature change is from an initial temperature to 50 degrees Celsius.

To calculate the heat released, we need to know the specific heat capacity of the brick material. Unfortunately, the specific heat capacity of brick is not readily available in the search results. However, we can assume a rough estimate of the specific heat capacity of brick to be around 0.84 J/g°C

To use this estimate, we need to convert the mass of the stove from kilograms to grams. There are 1000 grams in 1 kilogram, so the mass of the stove in grams is 350,000 grams.

Now we can calculate the heat released:

Q = mcΔT

Q = (350,000 g) x (0.84 J/g°C) x (ΔT)

Q = 294,000 J/°C x (ΔT)

Substituting the given temperature change of ΔT = 50°C:

Q = 294,000 J/°C x (50°C)

Q = 14,700,000 J

Therefore, the brick stove will release approximately 14,700,000 joules of heat when its temperature decreases from the initial temperature to 50 degrees Celsius.

Please note that this is an estimate based on the assumption of the specific heat capacity of brick. The actual specific heat capacity may vary depending on the composition and density of the brick material used in the stove.

I hope this helps! Let me know if you have any further questions.