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- Give the right answer, don't use Artificial intelligenceWhich of the following PV diagrams has At least one step that is isobaric  and at least one step that is isovolumetricBelow 0.3 K the slope of the 3He solid-liquid phase boundary is negative Which phase, solid or liquid, is more dense? Which phase has more entropy (per mole)? Explain your reasoning carefully.
- CH 2 VP3The only form of energy possessed by molecules of a monatomic ideal gas is translational kinetic energy. From kinetic, the average kinetic energy per molecule is KE %3D molecule Use these results to show that the internal energy of a monatomic ideal gas at pressure P and occupying volume V may be written as U = This answer has not been graded yet. Need Help? Read ItSix thermodynamic states of the same monatomic ideal gas sample are represented in the figure. (Figure 1) Part C Rank the states on the basis of the internal energy of the gas sample. Rank from largest to smallest. To rank items as equivalent, overlap them. • View Available Hint(s) Reset Help E F В A Figure 1 of 1 largest smallest F The correct ranking cannot be determined. C E Submit A
- Calculate the approximate temperatures at which the following energy storage modes of a nitrogen molecule become “unfrozen” (that is, when their heat capacities become at least half their respective maximum values). (a) The kinetic energy mode (ϵϵ ~ 10–7 eV) Temperature: ____ mK (b) The rotational energy mode (ϵϵ ~ 0.00025 eV) Temperature: _____ K (c) The vibrational energy mode (ϵϵ ~ 0.29 eV) Temperature: _____KWhich of the following PV diagrams have at least one step that is ISOBARIC ? Choose all that apply.Air enters a one-inlet, one-exit control volume at 6 bar, 500 K, and 30 m/s through a flow area of 28 cm 2. At the exit, the pressure is 3 bar, the temperature is 455 K, and the velocity is 300 m/s. The air behaves as an ideal gas (constant specific heat can be assumed). Potential energy effects are negligible. • Is the control volume open, closed, or isolated? • For steady-state operation, o the mass flow rate, in kg/s, is o the exit flow area, in cm2, is • Is the heat transfer negligible? If so, indicate why; if not, report the value in kl/s. • Of the engineering compponents discussed in class, which deivce does this control volume most nearly resemble?
- Explain why you can’t cool down your kitchen by leaving your refrigerator or freezer door open with your refrigerator plugged in for an extended period of time.Six thermodynamic states of the same monatomic ideal gas sample are represented in the figure. (Figure 1) Rank these states on the basis of the temperature of the gas sample in each state. Rank from largest to smallest. To rank items as equivalent, overlap them. • View Available Hint(s) Reset Help E F В A Figure 1 of 1 largest smallest F The correct ranking cannot be determined. E Submit A B Part B Complete previous part(s)Equal moles of three different ideal gases (A, B, and C) are prepared in separate sealed chambers at different temperatures. The velocity distributions for molecules of the three gases are shown below. The gases have different molecular masses which are not known. Which of the following statements about these gases MUST BE true? Number of Molecules B C Velocity Gas C has the greatest temperature. Gas A has the greatest average kinetic energy per molecule. O Gas C has the greatest average kinetic energy per molecule. O Gas A has the greatest molecular mass. O Gas C has the greatest rms speed. Next.