Question

1. Определите количество теплоты, необходимое для нагрева стальной заготовки массой 10кг от 100С до 6000С.

Answer 1

Q-количество теплоты.
Q=cm∆t=c*10кг*(6000-100)
подставь теперь значение удельной теплоты стали и вычисли

Answer 2

Calculating Heat Required to Heat Steel

To calculate the heat required to heat a steel ingot from 100°C to 600°C, we can use the formula:

Q = mcΔT

Where: - Q = heat energy (in joules) - m = mass of the steel ingot (in kg) - c = specific heat capacity of steel (in J/kg°C) - ΔT = change in temperature (in °C)

Specific Heat Capacity of Steel

The specific heat capacity of steel is approximately 490 J/kg°C.

Calculation

Given: - m = 10 kg - Initial temperature = 100°C - Final temperature = 600°C

Using the formula Q = mcΔT: Q = 10 kg * 490 J/kg°C * (600°C - 100°C)

Q = 10 kg * 490 J/kg°C * 500°C

Q = 2,450,000 J

Therefore, the heat required to heat the steel ingot from 100°C to 600°C is 2,450,000 joules.