Question

Сколько граммов стали можно нагреть на 20(градусах)С, сообщив ей количество теплоты 1500Дж(джоулей)

Answer 1

M= Q / c(t2-t1)
m= 1500 / 500*20=0,15 кг= 150 г

Answer 2

Calculating the Amount of Steel Heated

To calculate the amount of steel that can be heated by 20°C with a given amount of heat, we can use the formula:

Q = cmΔT

Where: - Q = amount of heat (in joules) - c = specific heat capacity of the material (in J/g°C) - m = mass of the material (in grams) - ΔT = change in temperature (in °C)

We can rearrange the formula to solve for m:

m = Q / (cΔT)

Given: - Q = 1500 J - ΔT = 20°C

We need to find the specific heat capacity (c) of steel to complete the calculation.

Specific Heat Capacity of Steel

The specific heat capacity of steel is approximately 0.46 J/g°C.

Calculation

Using the given values and the specific heat capacity of steel, we can calculate the mass of steel that can be heated by 20°C with 1500 J of heat:

m = 1500 J / (0.46 J/g°C * 20°C)

m ≈ 1500 J / 9.2 J/g ≈ 163 grams

Therefore, with 1500 J of heat, approximately 163 grams of steel can be heated by 20°C.