Question

Над газом внешние силы совершили работу 300Дж, а его внутренняя энергия увеличилась на 100Дж. В этом процессе газ... А. получил количество теплоты 400Дж Б. получил количество теплоты 200Дж В. отдал количество теплоты 100Дж Г. отдал количество теплоты 200Дж

Answer 1

Решение во вложении:

Answer 2

Understanding the Problem

The problem states that external forces have done 300 J of work on a gas, and as a result, the internal energy of the gas has increased by 100 J. We need to determine the amount of heat gained or lost by the gas during this process.

Solution

To solve this problem, we need to apply the first law of thermodynamics, which states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.

The equation for the first law of thermodynamics is: ΔU = Q - W

Where: ΔU is the change in internal energy of the system, Q is the heat added to the system, and W is the work done by the system.

In this case, we are given that the work done on the gas is 300 J and the change in internal energy is 100 J. We need to determine the amount of heat gained or lost by the gas.

Let's analyze the options given:

A. The gas received 400 J of heat. B. The gas received 200 J of heat. C. The gas lost 100 J of heat. D. The gas lost 200 J of heat.

To determine the correct answer, we can rearrange the first law of thermodynamics equation to solve for Q:

Q = ΔU + W

Substituting the given values, we have: Q = 100 J + 300 J Q = 400 J

Therefore, the correct answer is A. The gas received 400 J of heat.

Conclusion

In this process, the gas received 400 J of heat while external forces did 300 J of work on it, resulting in an increase of 100 J in the gas's internal energy.