Question

50 БАЛЛОВ!!!!!!! СРОЧНО В стакан с молоком поместили два нагревателя. Зависимости их мощностей N1 и N2 от времени t приведены на графике. Определите, на сколько градусов изменилась температура молока за 10 мин. Масса молока m = 200 г, его удельная теплоемкость с = 3900 Дж/(кг∙°С). Теплоемкостью стакана и тепловыми потерями можно пренебречь. Ответ округлите до целых.

Answer 1

Відповідь:сейчас попробую решить, но не надейся, если решу напишу

Пояснення:

Answer 2

Problem Analysis

We are given a graph showing the power dependencies of two heaters, N1 and N2, on time t. We need to determine the change in temperature of the milk in the cup over a period of 10 minutes. The mass of the milk is 200 g, and its specific heat capacity is 3900 J/(kg∙°C). We can neglect the heat capacity of the cup and any heat losses.

Solution

To determine the change in temperature of the milk, we need to calculate the total amount of heat transferred to the milk by the two heaters over the given time period.

The amount of heat transferred to an object can be calculated using the formula:

Q = m * c * ΔT

Where: - Q is the heat transferred (in Joules) - m is the mass of the object (in kilograms) - c is the specific heat capacity of the object (in J/(kg∙°C)) - ΔT is the change in temperature of the object (in °C)

In this case, the mass of the milk is 200 g, which is equal to 0.2 kg, and the specific heat capacity of the milk is 3900 J/(kg∙°C).

To calculate the change in temperature, we need to find the total amount of heat transferred to the milk by the two heaters. We can do this by integrating the power dependencies of the heaters over the given time period.

Let's denote the power of heater N1 as P1(t) and the power of heater N2 as P2(t). We can integrate these power functions over the given time period to find the total heat transferred by each heater.

The change in temperature of the milk can then be calculated using the formula:

ΔT = Q / (m * c)

Let's proceed with the calculations.

Calculation

To calculate the change in temperature of the milk, we need to integrate the power dependencies of the heaters over the given time period.

Unfortunately, the search results did not provide the necessary information to determine the power dependencies of the heaters. Without this information, it is not possible to calculate the change in temperature of the milk.

Please provide the power dependencies of the heaters N1 and N2 over time t so that we can proceed with the calculations.