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A Moving to another question will save this response. <<< Question 35 of 36 > >> Question 35 10 points Save Answer A cycle receives 450 kJ of heat from a reservoir at 278 K, receives some work from the surroundings, and rejects 1500 kJ of heat to a water tank. The water tank contains 25 kg of water (specific heat capacity = 4.2 kJ/kgK) and is initially at 325 K. What is the change in total entropy of the whole system during one complete cycle? Give your answer in J/K to the nearest whole number. A Moving to another question will save this response. << < Question 35 of 36 > >>
✓ Question Completion Status: Moving to another question will save this response. Question 30 of 36 > >> Question 30 10 points Save Answer You are developing an index for selecting a hollow, cylindrical tube under end compression by a force F where the radius (r) is fixed but the wall thickness (t) is free to change. The tube must be as light as possible and not buckle under the end load. Which of the following could be a valid pair of objective and constraint equations for this scenario? L F F Downloadable image O The objective would be the mass m given by m=pLar² The constraint would be Fmax=0yA=0y. T .πr² O The objective would be the mass m given by m=pL πr² The constraint would be