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A heat engine undergoes the following thermodynamic processes as it goes through it’s cycle: Step 1: Isovolumetric (isochoric) increase in pressure from Po to 5Po Step 2: Isobaric expansion from Vo to 4Vo Step 3: Isovolumetric (isochoric) decrease in pressure from 5Po to Po Step 4: Isobaric compression from 4Vo to Vo On your scratch sheet, draw the PV diagram for this cycle. What is the work done in one cycle of this engine in terms of the values given?

When is the final exam for this course? 

A physical therapist is evaluating a 55-year-old female with MS diagnosed 6 months ago in an outpatient clinic. The patient presents primarily with visual and sensory impairments and has not had any exacerbations since her initial diagnosis. Based on this patient’s demographic information and presentation, which of the following factors is predictive of faster disease progression for this patient?

Bonus:  Which theorist studied suicide to prove that sociology could be considered an academic discipline?  What was the objective behind the Stanford Prison Experiment? Give two ways that research ethics were violated in the Tuskegee Study?   Before we developed the need for written contractual agreements in the US, how did men seal a contract? (from the culture lecture) Explain why English is the most widely spoken language in the world?   

Which of the following is NOT true, according to the culture lecture? 

The number of prisons has greatly decreased in the last several decades.

Inmates do not have the same civil rights as other members of society.

A 2m long stick is placed horizontally so it is balanced perfectly at a point in the middle. A 1.6kg mass is placed at the far left end of the stick. Where on the right side of the stick must a 4.1kg mass be placed so the entire system is in equilibrium? Be sure to specify if your position is measured from the center of the stick or from the end. Which of the masses produces a positive torque and which produces a negative torque? Explain your answer.

A block of wood has these dimensions: length = 0.45m, width = 0.25m, height = 0.15m. It has a density of 850kg/m^3. The block is floating in a tub of water. What is the mass of the block of wood? How much extra mass would have to placed on top of the block so that the top surface of the block is even with the surface of the water?

Consider the following equation:             N2O4(g) ⇌ 2 NO2(g)    Kc = 5.8 × 10−3  If the initial concentration of N2O4(g) = 0.040 M and the initial concentration of NO2(g) is 0 M, what is the equilibrium concentration of N2O4(g)?