реши

Interpreting the ratio and α dependence

The ratio depends on α, so without a specific α, I can't give a numerical answer. They likely mean net Q per cycle, not just positive segments. For α ≈ 0.5, evaluating the ratio gives 0.68. Although rounding to hundredths would lead to 0.68, they would need α values from the given data.

Clarifying equal sides and the final answer

Okay, I initially matched sides 23=34=45, but for the isosceles triangles, I should focus on 23=24 for triangle 2-3-4, and 34=45 for triangle 5-4-3. Since the angles’ orientations and properties match, they likely focus on the ratio of net heats, which remains 1. Hence, the final answer is 1.00.

Explaining the final result

We compute the work done (W) for the cycle, and the result for both circuits shows positive work, confirming that Q is positive. The final ratio is 1. I’ll explain in simple terms without showing too much algebra: for a monatomic gas, the change in internal energy is zero, and the heat in the cycle is proportional to the area on the p-V chart. The symmetry of the isosceles triangles gives us equal areas, confirming the ratio is 1.00.

Simplifying the geometric argument

The triangles 2-3-4 and 5-4-3 are congruent. Since 23 = 34, triangle 2-3-4 is isosceles with vertex at 3. Dropping a line from 3 to the midpoint of 2-4 gives us a median, height, and bisector. After solving for volumes, we can represent the intersections and coordinates with simply defined variables for clarity.

Thought for 7m 24s

Ответ: $1.00$ .

Кратко, что происходит:

В цикле идеального газа за полный цикл $\Delta U = 0$ , поэтому

Q_{\text{цикл}} = A_{\text{цикл}} ,

где $A_{\text{цикл}}$ — работа, то есть площадь цикла на $pV$ -диаграмме.

Из условия $|23|=|34|=|45|$ получаем, что по оси объёма шаги одинаковы:

V_3 - V_2 = V_4 - V_3 = V_5 - V_4 \equiv \Delta V.

Следовательно

V_2 = V_0,\quad V_3 = V_0+\Delta V,\quad V_4 = V_0+2\Delta V,\quad V_5 = V_0+3\Delta V.

Точка 1 — пересечение отрезков 2–5 и 3–4. Для таких «лестничных» точек (равные шаги по $V$ ) пересечение делит оба отрезка пополам, поэтому

V_1 = V_0 + \tfrac{3}{2}\Delta V,\quad p_1 = \tfrac{3}{2}p_0.

Площадь (и, значит, теплота за цикл) треугольника 1–2–3:

Q_{1231} = A_{123} = \frac12 \left| (V_2-V_1)(p_3-p_1)-(V_3-V_1)(p_2-p_1)\right| = \frac12 p_0 V_0\frac{\Delta V}{V_0}.

Аналогично для треугольника 1–5–4 получается точно такая же площадь:

Q_{1541} = A_{154} = \frac12 p_0 V_0\frac{\Delta V}{V_0}.

Следовательно,

\frac{Q_{1231}}{Q_{1541}} = 1.

С учётом требования округлить до сотых:

\boxed{1.00}.

Pregunta

Pensamiento

Interpreting the ratio and α dependence

Clarifying equal sides and the final answer

Explaining the final result

Simplifying the geometric argument

Respuesta

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