Question

Какое количество теплоты требуется для нагревания латунной пластинки массой 250г на 300 градусов цельсия? Удельная теплоемкость латуни 380Дж/кг*градусы Цельсия

Answer 1

Если начальная температура равна 0 то:
380*0.25*300=28500Дж

Answer 2

Calculation of Heat Required to Heat a Brass Plate

To calculate the amount of heat required to heat a brass plate, we can use the formula:

Q = m * c * ΔT

Where: - Q is the heat energy required (in joules) - m is the mass of the brass plate (in kilograms) - c is the specific heat capacity of brass (in joules per kilogram per degree Celsius) - ΔT is the change in temperature (in degrees Celsius)

Given: - Mass of the brass plate (m) = 250 grams = 0.25 kilograms - Specific heat capacity of brass (c) = 380 joules per kilogram per degree Celsius - Change in temperature (ΔT) = 300 degrees Celsius

Let's substitute these values into the formula to calculate the heat energy required:

Q = 0.25 kg * 380 J/(kg·°C) * 300 °C

Calculating this expression gives us:

Q = 28,500 joules

Therefore, the amount of heat required to heat a brass plate with a mass of 250 grams to a temperature of 300 degrees Celsius is 28,500 joules