Question

Физики,к вам такой вопрос.Имеется газ,получивший от нагревателя 700 Дж энергии и при этом совершивший работу 200 Дж.Как,собсно,изменилась вн.энергия газа?Спасибо.

Answer 1

Так как газ выполняет работу, то первый закон термодинамики преобретает вид:
Q=deltaU+A
Отсюда deltaU рвано 500 Дж

Answer 2

Calculation of Change in Internal Energy of the Gas

To determine how the internal energy of the gas has changed, we need to consider the energy input from the heater and the work done by the gas. The change in internal energy can be calculated using 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 gas - Q is the heat added to the gas - W is the work done by the gas

In this case, the gas received 700 J of energy from the heater and performed 200 J of work. Plugging these values into the equation, we can calculate the change in internal energy.

ΔU = 700 J - 200 J = 500 J

Therefore, the change in internal energy of the gas is 500 J.

Conclusion

The change in internal energy of the gas is 500 J.